Wilson joins the Chug Patrol, Brewster joins the Chuggineer construction crew and Koko is recruited into the Speed Fleet.

It's winter time in Chuggington and the Chuggers are busy making preparations throughout Chuggington for the impending Big Freeze! When the freezing temperatures cause multiple problems, it's up to Wilson, Koko, Brewster and friends to perform one winter rescue after another!

When Harrison breaks down, Koko volunteers to replace him on the night shift, determined to make the fastest run ever. But Vee insists that Wilson and Brewster go too, despite Koko's protests that Brewster will slow them down. Koko races off, teasing Brewster about being a 'slowcoach.' Suddenly she shudders and slows to a stop and Brewster and Wilson overtake.

Wilson is determined to get his Animal Transportation badge by taking Ebo the elephant to his new home in the Safari Park. But the naughty elephant has other ideas! He causes mayhem by throwing fruit and grabbing onto low hanging branches. To top it all, he uses his trunk to uncouple his car and escape! Poor Wilson chases after the mischievous elephant, who leads him down an overgrown track.

Wilson and Brewster are sent to get stone from the mountain quarry. Brewster is in a hurry to get the job done, so that he can get back and practise some new moves in the training yard with Koko. For once he doesn't slow things down by asking questions, and he doesn't hear Dunbar warning them to be extra careful on the way back, as going downhill with a heavy load is harder.

The trainees are heading for a lesson with Dunbar in the training yard when an underground tunnel catches Koko's eye. She wants to explore it but Vee says she isn't ready yet. Dunbar is called away from the lesson about switching tracks before they barely get started. With time on her wheels, Koko decides she's going to see where that tunnel goes.

Eddie lives so far away from Chuggington that he just can't seem to get into work on time. After getting into trouble with Morgan yet again, he decides to sleep at the depot, to be sure to be on time. But Calley's emergency callouts keep him awake all night, and he oversleeps. Late again! Hodge and the trainees try to find a new home for Eddie in Chuggington.

The trainees are learning how to use ice-cream cars today, and will be trying for their Ice-Cream badges. The great Frostini is going to test them on their skills. When Wilson's car breaks down, Puffer Pete comes to the rescue, pulling out his old steam driven ice cream wagon from the back of the rolling stock store - where it has sat for thirty years.

Koko has her first big solo delivery job, picking up timber and delivering it to the paper mill - that is if Old Puffer Pete gets out of her way! In spite of Pete's admonition to 'take it slow and steady,' Koko speeds toward the timber yard, nearly ploughing into a family of squirrels! On her return she encounters the squirrels again - but this time she has to make an emergency stop.

Part of the track is out, and there's chaos in Chuggington! Vee needs Eddie to repair the track - but he's late for work again. Hodge prepares the electro-magnetic crane and the replacement track so they will be ready to go as soon as Eddie arrives. Wilson persuades Hodge that he could do the repairs by himself and save Eddie from getting in trouble. Hodge doesn't think so.

Wilson and Koko are having loads of fun racing each other - until Wilson damages his wheel! He's scared of going to the repair shed to get it checked out, so he tries to put on a brave face and ignore the problem - despite Koko and Brewster's protests. When he gives Felix the Farmer and his churns of fresh cream a ride to the market, Wilson's condition worsens.

It's time for the annual Chugger Championship Race - and speedy Koko is sure that the big, shiny trophy is hers! She's so determined, she spends hours practising and doesn't have time for anything else. Wilson thinks that the race is more important to her than her friends and the two of them fall out. When Wilson breaks down during the race, Koko must choose whether to help him.

The chuggers are learning to carry passengers comfortably, using dummies specially made to wobble if the ride isn't silky smooth. Dunbar will test them at the end of the day. Koko and Brewster take to it easily, but poor Wilson struggles. He goes off to practise by himself in the park, but things don't go well.

Everyone loves Frostini, the cool Italian ice cream chugger. Wilson wants to be just like him, so he's especially excited to learn that Frostini needs a helper for the school holidays. Brewster and Wilson compete for the position by doing a trial ice cream delivery round. Wilson imitates Frostini, but the children aren't impressed by his over confident attitude.

Koko is yearning for adventure - and she just might get it, as today the chuggers are making deliveries out of town. But Vee asks Old Puffer Pete to accompany them - and he's so SLOW. They always have to wait for him to catch up - and he's always letting off those embarrassing bursts of steam! During their travels, they come across a mysterious old spur track. Pete tells them it leads to Old Chuggington, which is now a ghost town. The trainees decide to explore the old town on their own and get helplessly, hopelessly lost. When Wilson accidentally sets off the old Chuggington Central Whistle, Pete puffs his way through the maze of tracks to investigate. He rescues the youngsters and takes them on a fascinating tour of the old town, which he still knows like his own pistons! The trainees realize that Pete isn't such a fuddy duddy after all and there's a lot that they can learn from him.

Brewster delivers some feed to the Safari Park, and hurries back to practice today's task - picking up mail sacks - unaware that he has a monkey stowaway onboard! Back at the depot, someone - or something! - is causing mayhem. Methodical Brewster's questioning mind comes in very handy when he turns detective.

On her way to see a lamb at the farm, Zephie gets lost! She shouts for help and rings her little bell, but no one hears her. Morgan fits her with a siren so that she can call for help if it ever happens again. Zephie falls in love with her new accessory and can't resist playing with it and setting the siren off - much to the annoyance of the other chuggers.

Brewster is so excited about seeing the new Action Engine movie today at the ride-in movie theatre. But Irving gives him the job of taking tin cans to the foundry for recycling. Brewster worries that he'll never be back in time for the film - unless he can be as speedy as his Super-chugger hero! Brewster charges off and gets caught up in pretending to be his hero.

Koko finds a lost puppy and wants to keep it. Convinced she can look after him and practice the new task - delivering newspapers - Koko soon runs into trouble. Zoomy needs lots of attention, food and walks. With all the extra work, Koko will never be able to get the hang of the throwing arm to deliver the newspapers into their boxes!

Twiga the giraffe is going to have a baby! An excited Koko has been given the job of keeping watch overnight, and fetching Dr. Gosling, the vet, if Twiga goes into labour. That night Mtambo (the safari tour guide train) tells Koko all about nocturnal animals. Koko learns how they use their senses to get round in the dark. When Twiga goes into labour, Koko goes to fetch the vet.

Olwin takes every group of new trainees out on an outward bound training course. She teaches them navigating skills to be used in the event of bad weather or emergencies. Brewster, Wilson and Koko are really looking forward to it - until Zephie and Hodge tell them how Nanny Olwin will treat them like babies the whole time! And she does.

A storm has left the Safari Park in a bit of chaos, and some animals have escaped! Emery teases Brewster, saying one of the escapees is a dragon. So when one of the fugitives - a golden bell frog - makes his home in a tunnel that amplifies his distinctive 3-note croak into a mighty roar, the trainees are convinced that Emery is right!

Koko challenges Wilson to see if they can stay awake all night! Morning comes, and Wilson declares himself the winner - just as Vee gives him a job for the day: he's going to be collecting the mail and taking it to the sorting office. While Koko sleeps in, poor Wilson struggles to keep his eyes open.

The trainees are doing a sign-reading exercise. If they work as a team and follow the signs correctly - there'll be a wonderful surprise at the end of it. The trainees start off together, but Koko and Wilson quickly lose patience with Brewster - he's so methodical, that it's slowing them up! The friends have a bit of a falling out.

The trainees are taking their passenger test. If they pass, they'll be able to carry passengers all on their own. Brewster and Wilson are a little nervous, but Koko is confident - after all, she's a passenger train! Mr. Simkins, from the Ministry of Chuggers, arrives to examine them. His 'jiggleometer' will tell him whether or not the trainees are riding smoothly. Koko volunteers to go first. Unfortunately, just as she starts, Simkins coughs and sets the machine off with a deafening beep. Koko jumps and Simkins gets thrown across the carriage. He fails Koko and, despite her protests to be given a second chance, is unmoveable. Broken-hearted, Koko goes off to the recycling yard and pours her heart out to Irving. Irving remembers Simkins of old and intervenes - reminding him of a similar situation in his own past. Simkins relents and gives Koko another chance! This time, without the jiggleometer, Koko passes with flying colours!

Wilson has been given the important job of bringing the refrigerated ice cream cars from the ice cream factory to the Ice Cream Tasting Fair. The refrigeration cars are heavy, so he'll have to take them one at a time. Wilson makes the first trip successfully, but when his hero - cool ice cream chugger Frostini - offers to give him a tour of the factory, he forgets all about his important job.

Children from Chuggington School are coming to the Safari Park, and Mtambo is training Wilson and Brewster to help out as junior guides. Mtambo tells them it's important to pay close attention to what he tells them about the animals, as they in turn will have to pass on the facts to the children - who will be tested afterwards to see how much they've learned.

The trainees are playing hide-and-seek - and everyone has to admit that Wilson is the best hidey-chugger ever! The trainees' game is interrupted for a lesson: learning how to do different emergency stops with mud, leaves and water on the rails. Wilson is in heaven, as he likes nothing better than getting dirty!

Hodge wants to be more independent, but Eddie never lets him do jobs on his own. So when Wilson startles Hodge, causing him to accidentally break a junction box, Hodge decides to deal with it himself. Using the crane, he jams the wires back in and shuts the doors. Easy. But then strange things start happening. Lights and signals stop working, Vee malfunctions and chuggers are sent to the wrong destinations. Hodge and Wilson realize it must have something to do with the box they broke! If Eddie finds out, he'll never trust Hodge to do anything on his own again - but if Hodge doesn't tell him, it could take Eddie days to figure out what's wrong. Hodge finally musters up his courage and confesses. A relieved Eddie fixes the box. Eddie promises he'll let Hodge do more jobs by himself and Hodge promises to tell Eddie straightaway when things go wrong.

Wilson is assisting Frostini as he creates a new flavour for the mayor's banquet: Chugstastic Chewy Cheesecake! But they discover that the mayor's wife is allergic to cheese. Frostini will have to come up with something else by tonight! Wilson tries to help, but ends up causing the mixing machine to explode covering everything in ice cream. Annoyed, Frostini sends Wilson to the chugwash.

Zephie is given the important job of transporting newspaper reporter 'Rag' and photographer 'Snap.' They're doing a story about Morgan's new rail-going cycle, which Zephie isn't happy about. It's her job to take Morgan places! She feels threatened and wonders if she should find a new job. Rag lets her wear his press pass just for fun, and forgets to retrieve it.

The chuggers have often told Emery that he is so funny, he should be on the stage. So when a TV crew comes to make a documentary about Chuggington, Emery sees his chance for stardom. The TV crew love how he jokes about the other chuggers - and they decide to have him do the narration for the documentary.

The trainees are trying their wheels at pulling rolling stock around an obstacle course. Ambitious Wilson tries the fire wagon. The course seems easy - until Dunbar tells them they have to do it backwards! Wilson goes first, but makes loads of mistakes. Discouraged, he slopes off and bumps into Harrison, who gives him a tip: he should drop down a gear for more control. Great!

The trainees are going to be fetching and delivering building supplies today. As they're working, Brewster sees a builder flip his clipboard in the air. Wow! He's never seen anyone do that before! Wilson wonders what's so special about that. Brewster introduces Wilson to his new hobby: people-spotting. Before long, Wilson is hooked too, and the two trainees get a bit competitive.

Zephie has never worked in the Safari Park before, so she's excited to be taking the vet, Dr. Gosling, to give the animals their checkups. Emery teases her, saying she'd better watch out for the monkeys. They might pull her wipers or steal her bell! Zephie gets worried. When Dr. Gosling says he'd like to start with the monkeys, she asks if they can do the giraffes and elephants instead.

Brewster overhears Morgan talking about something going to the scrap yard, and then hears Pete saying how worn out he is. Brewster jumps to the conclusion that it's Pete who's going to the scrap yard! He and the other trainees determine to help Pete by doing all of his work for him. A farce ensues as the trainees rush around doing Pete's work as well as their own.

Old 'Picky Nicky' Inspector Nicholas is coming to conduct Chuggington Depot's annual inspection. The chuggers swing into action getting things ready. Emery has a day off and really wants to help. He bosses everyone about and generally gets in the way. An exasperated Vee sends him to the station to wait for the Inspector. Emery finds a young woman there.

Dunbar and Nurse David from Chuggington Hospital are teaching the trainees how to use the ambulance car. Shouting over the noise of the siren, Dunbar loses his voice. Morgan can't find out what's wrong, but he suggests that Dunbar rest. Inspired by his lesson, Wilson decides to nurse Dunbar. Unfortunately he's a little too attentive, but Dunbar doesn't have any voice to tell him to go away!

Mtambo's in a bit of a rut giving the same old tours everyday in the Safari Park. He wants some adventures in his life so that he has new stories to tell. One of Mtambo's passengers, Freddy, says that he's about to head off on a jungle expedition. Freddy asks Mtambo to watch his camera gear while he goes to the souvenir shop. Mtambo makes up his mind to ask Freddy for a job when he returns.

Chatsworth has had a very busy day and wants a quick snooze, but everything and everyone conspires to keep him awake. First the trainees are playing loudly in the park - and then Vee calls him out on another long job. Meanwhile, at the quarry, Harrison unknowingly gets some rocks trapped in his engine.

Koko challenges Hodge to a competition: whoever does the most jobs that day wins! But it has to be a secret. Hodge can't even tell Eddie. Hodge hurries off, eager to get started. Meanwhile, Eddie's having a little trouble tuning the electric guitar he found and wants to fix it. Hodge, desperate to win the competition, runs Eddie all over town instead, doing jobs that don't really need doing.

Calley is doing emergency rescue training with the trainees. If they do well, they'll earn a badge. Calley takes them to her underground chamber to show them all of her emergency rolling stock and the computer that tells her when a chugger is in trouble. Then they go out into the country to do some practical exercises. Calley asks Brewster to pretend to rescue Zephie.

The trainees are learning to use the paint wagon. Wilson has trouble concentrating, so while Koko and Brewster learn how to mix colours, Puffer Pete takes Wilson to Old Town for some extra painting tuition. Wilson is great at doing wild, artistic designs, but Pete says he also has to learn how to paint with control. With Pete encouraging him, Wilson does it!

The depot clock is broken, and the schedule is in chaos! Eddie needs to go to Old Town to see if he can borrow a part from the old clock to repair the depot clock. Hodge gives him a lift, as he's taking the chugscan back to the factory because it's spouting gibberish. Meanwhile, Olwin takes the trainees to Old Town, and on the way tells them about the Old Town Mystery Chugger.

Puffer Pete's firebox is completely worn out and he can't move without it. It's going to take ages to have a new one made. Until then, Pete is stuck and can't move by himself. Meanwhile the trainees are playing hide and seek in Old Town. Brewster hides in a shed. When he emerges, he's covered in bits of old junk. Koko and Wilson think it's funny!

The trainees are thrilled to be spending the day training with Action Chugger. He puts them through some intensive stamina exercises, but Wilson just wants to get to the bit where they use jetpacks and fly. Action Chugger laughs and tells him that there is much more to being a super chugger than flying. Brewster is the first to have a go on a flight simulator.

Zephie admires the 'big' chuggers, and wants to pull freight just like them. Brewster is dismissive when she offers to help him - you have to be big and strong to do the things he does. When Zephie overhears Brewster being given his jobs for the day, she decides to do some of them for him. Then he'll see just how good she is at pulling freight!

A magazine photographer is coming to Chuggington to do a feature on steam trains. Olwin is determined to look her best for her picture and heads for the chugwash. Along the way, she encounters Wilson and Brewster tugging a car back and forth between them, arguing over who gets to deliver Ebo the elephant's special soap. Neither of them wants to do the other job - a quarry delivery.

When Irving leaves Koko in charge of the recycling yard, she's keen to show how responsible she is. In fact she's so excited, that she doesn't listen properly to his instructions. She ropes Wilson into helping her, and loves having an 'employee' to boss around. Because she hasn't listened, things go very wrong: machinery gets clogged with paper, the pallets get knocked over.

Koko and Brewster are going to the forest to pick up some wood and take it to the paper mill. Wilson wishes he could go, but he has to pick up a roll of special paper for the printers. In the forest, Brewster and Koko start to play and unknowingly break a water pipe that gushes everywhere. Hearing it, Koko thinks it's a waterfall.

Old Puffer Pete has been working in Chuggington for 150 years, and the mayor wants to commemorate his anniversary with a special show. The trainees are going to do a carefully choreographed routine - but it all goes wrong. Wilson doesn't listen, Koko goes too fast, and Brewster doesn't seem to know his right from his left!

Vee needs someone to pull the royal carriage for the prince of Buffertonia. Chuggers race in to get the job, but Harrison is first - thanks to cutting some corners and running a red light or two. Happy to have the job, he goes off with Puffer Pete to learn the route. Pete notices that Harrison has got into some bad habits. He takes shortcuts, ignores signs and breaks the speed limit.

Vee announces that the King of Buffertonia is coming for a tour of the Safari Park. Mtambo wants to give the best tour ever, so he does a practice run - with Hodge pretending to be the king. Mtambo is ready to give his royal tour when he learns that the King won't be coming because he has been trapped in a landslide. Mtambo is devastated.

Dunbar has a new training device: a voice-operated storm simulator tunnel, which simulates wind, rain and fog. It's programmed to respond only to Dunbar's voice. Wilson particularly loves battling the wind. Dunbar says that in real conditions, it's best to couple up to another chugger as the added weight gives control.

The trainees guess whether or not Dunbar has loaded more weight onto their car.

Join Koko, Wilson and Brewster as they learn new skills and life lessons on their quest for many different badges. Brewster and Koko earn their Carwash badges by learning how to wash the dirty train cars. They quickly realise that team work will help them on their quest.

When Koko sees the pretty design that Lori has painted on Zephie??s face, she decides she wants one too and the two of them compete to see who can get the biggest and best design. Lori??s too busy repainting rolling stock in the automated spray shed to help, so Koko and Zephie decide to paint each other using the paint car.

On the hottest day of the year, when the trainees are going to help Frostini deliver ice cream, there??s a power failure and it looks like all the ice cream will melt! Speedy has an idea: he and Frostini will go to the ice caves in the mountains and bring back ice to keep things cold. Meanwhile, the trainees must look after the refrigerator cars.

Calley is teaching Hoot and Toot how to use the sliding turntable. When she gets called away on an emergency, she asks Brewster to take over the training. The twins find Brewster??s methodical way of teaching a bit boring and make their escape. Brewster chases them all over the depot. The twins accidentally get on the track lift, which sends them straight underground.

Action Chugger is in town making a movie and Emery lands the exciting job of assisting on the film set. Brewster is a little envious, especially as his job for the day is litter-picking. He worries that his fellow chuggers think he??s a bit dull. Calley tells him that a job is what you make it and shows him that the litter-picking wagon can do some cool things.

Nobody wants to go down the mine to collect the rolling stock for cleaning, so Speedy suggests they settle it with a chug of war! Two teams will face each other across a bridge with a piece of rolling stock between them. The first team to pull the rolling stock off the bridge is the winner and the losers will clean the mine. Harrison captains one team, Speedy the other.

It's a windy day in Chuggington, which is causing lots of problems. Eddie has a list of jobs as long as his arm! Hodge really wants to help. Some fencing needs to be delivered, but the hooks that hold the tarpaulin down over the load are missing. As Eddie dashes off to yet another job, he asks Hodge to pick up some more hooks. Farmer Felix is anxious to get his fencing before his animals escape. Not realising he actually needs the hooks to keep the tarp secure, Hodge decides it would really help if he took the fencing with him on his way to pick them up. On his travels, the wind works the tarp loose. It affixes itself to Hodge, turning into a kind of sail. It whizzes Hodge along and lifts him high in the air, sailing him all round Chuggington. Eventually it drops him back in the depot. When Eddie learns that Hodge has inadvertently fixed everything on his 'to do' list in the process, he thinks Hodge should sail away more often!

When Emery takes reporter Rag around town as he covers exciting news stories, he wishes he could get his picture in the paper! Rag tries to get an interview with the famous magician, The Magnificent Mysterioso, who has come to Chuggington to do a show. As Emery waits, he sees his chance. Smoke! The stage must be on fire! Emery uses a water cannon to put it out.

Hoot and Toot are double ended shunting chuggers. Hoot gets fed-up of Toot always being at the front, so Toot agrees to let him lead for the day. Hoot mixes up a delivery of red tomatoes and green apples. He also refills the spray shed with the wrong colour paint and Wilson is sprayed green instead of his usual red! Toot is upset with Hoot for getting everything wrong.

Dr Ling is experimenting with a new invention that can help chuggers increase their speed - the Booster! Brewster helps her to test it. The new booster makes him go super-fast, but it has some terrible side effects. Brewster gets a lot of attention and loves being thought of as a speedy engine, so he says nothing about the problems.

Hodge loves Chuggington Quiz Night – so when quizmaster Harrison loses his voice, Hodge volunteers to take his place. But he has a really busy workday with Eddie and doesn’t get any time to think up his questions. To try to save time, Hodge overloads himself and breaks his axle. Because Hodge is one of a kind, they won’t be able to find a replacement in time for him to host the quiz.

Wilson is given the important job of taking some photos, to be used on a poster promoting Chuggington. Meanwhile, Dr. Ling has a special assignment for Hoot and Toot: pulling a robotic dinosaur around town to promote a new exhibition at the museum. Wilson isn't having much luck taking exciting pictures - until he sees the dinosaur go by. Wowzer! He has to get a photo of that! He chases after it, but unfortunately has a collision. His camera flies off and lands out of reach - just as Hoot and Toot arrive with the dinosaur. Hoot has an idea. Extending the dinosaur's neck, and using its jaws to grab, Hoot and Toot reach up and retrieve Wilson's camera. The camera goes off while it's in the dinosaur's mouth - giving Wilson the perfect shot of Chuggington he needs!

The trainees are learning how to use their snowploughs, snow horns and snow lanterns, but have yet to experience real snow. When a blizzard comes in, it's all chuggers to the rails! Wilson goes out with Harrison, promising to stick very close to him. Unfortunately, he gets distracted by some children building a snowman, and falls behind.

It’s a cold, snowy day in Chuggington and every available chugger is heading out to plough – except for Chatsworth, who is going for a rest after ploughing all night, and Hoot and Toot, who are too inexperienced to be out in the snow. Koko and Harrison head off as a team, Harrison boasting there isn’t a drift that can stop him!

Eddie and Hodge have cleaned the sludge out of the chugwash. Now they’re going to refill the chugwash soap, then clean the underground tunnels using the Scrub-A-Chug – a fantastic piece of rolling stock with brushes that cleans the ceiling of the tunnel. Their work is interrupted when they get called away on an emergency.

Dr. Ling is giving a talk about meteors and how, many years ago, one crashed right near this area. Brewster pulls in a real meteorite, borrowed from the museum. Dr. Ling demonstrates that you can move the meteorite with a magnet, as meteorites contain metal. Hoot and Toot are afraid the meteorite might escape and destroy Chuggington, so they decide to return it to space.

An ice storm hits Chuggington and Koko really wants to help. She sees her chance when she comes across one of the anti-freeze cars. She thinks she's de-icing the tracks, but she's actually making them even icier - she doesn't realise that the car contains water. Because of her actions, Eddie and Emery get stranded out in the cold. Koko admits her mistake and does what she can to help Calley rescue them. When Eddie and Emery are back, safe and warm, Koko promises she'll never do anything like that again without checking with someone first!

The trainees are having an exciting stunt training session with Action Chugger, when he is called away to do some filming. As he leaves, Action Chugger invites Brewster and Koko to come down to the film set later to demonstrate the skills they have learned. But Brewster gets called on a long run to Tootington and has no time to practise. Koko goes with him to keep him company.

On an icy winter's day, Wilson and Koko are sent out to sand the tracks in the mountains. They take a short cut through the ice cave. Koko does everything properly, but Wilson doesn't keep his mind on the job, as he has fun exploring. He doesn't realise that an icicle has fallen into his sand wagon, wetting the sand and rendering it useless. He's stuck! He figures out a way to dry the sand by using the heat from his engine and makes it back to the depot - after finishing his job, of course!

Border Bridge is re-opening and Wilson has been given the special job of using the new 'rolling reporter' car to make a live report, which will be broadcast on Vee's boards all over Chuggington. Wilson takes the car out to practise and comes across Calley training Hoot and Toot. When an emergency call comes in, Calley asks Wilson to look after the twins. They offer to help Wilson practise his report, but instead, they run off with the camera car and end up lost in the ice cave. Happily, the camera is transmitting, so using Vee's boards, Wilson is able to track them. He rescues them and the car and manages to get to the bridge just in time - and Rolling Reporter Wilson is on the air!

It's another glorious day in Chuggington and Zephie is keen to enjoy the sunshine, but every job she is given is underground. Meanwhile Speedy is out in the countryside serving drinks with the juicer wagon, when he'd rather be doing a proper job at the depot. They agree to swap jobs. While trying to operate the juicer, Zephie accidentally knocks a beehive out of a tree. The bees swarm into Zephie's carriage, looking for a new home. Speedy comes to her rescue and together they find the bees a new, safe place to live.

Brewster is going to be carrying Mayor Pullman, the new Mayoress of Chuggington, across the newly re-opened Border Bridge in the traditional welcoming ceremony. During the practise run, some of the facade falls off one of the bridge's pillars. It looks as though the ceremony will have to be cancelled, as the bridge might not be safe! At first Brewster is devastated - but then he saves the day by using something Dr. Ling's been working on: her new soap was a disaster in the chugwash, as it set into rock hard foam, but it's perfect for repairing the bridge! Safety restored, Brewster proudly carries Mayor Pullman into Chuggington.

The new Mayoress, accompanied by her nephew Denzil, is touring Chuggington. She's observing the chuggers working, in order to help her decide who should be the recipient of the prestigious Chugger of the Year award. Koko is sure she's in with a chance - but rather than doing her jobs, she spends her time trying to impress the Mayoress. In the process, she ends up nearly ruining the ceremony.

The defect detector is a device that lets Vee know if there's anything wrong with chuggers as they pass by its scanners. Unfortunately, it seems to be malfunctioning! Eddie takes it off to the repair shed and Emery, wanting to be helpful, takes its place. But, worried that he might miss something, Emery sends nearly everyone to the repair shed, creating chaos in the depot! Emery feels bad that he's caused so much work for Vee and wishes he could make up for it. He has an idea. If the detector could talk, it wouldn't have to do everything through Vee. Dr Ling and Eddie think it's a great idea and they update the detector so that it speaks. And they know the perfect voice to use Emery's!

Eddie is having a very busy day and Hodge really wants to help - but all the jobs need hands not wheels. When Wilson reports the track lift is malfunctioning, Hodge decides to try to fix it himself. He only makes matters worse, bringing the lift to a grinding halt with Wilson stuck on it! Eddie agrees to let Hodge go and fetch the lift part needed, as long as he uses Dr Ling's Chugnav to guide him on his journey. Unfortunately, Action Chugger has knocked the satellite, which has skewed the signal, leaving the Chugnav talking utter nonsense! Hodge figures out that the satellite must be broken - so Action Chugger takes Hodge on an exciting trip into space to fix it. Hodge finally gets to help out!

Koko decides to try for the High Speed badge - something no trainee has ever won. Emery wishes he still earned badges like the trainees do. For fun, he plays a 'pretend badge' game with Hoot and Toot, where they award each other imaginary badges. Emery is so busy playing his game that he doesn't listen when Vee assigns him to take some supporters to the footbridge to cheer Koko on. Realising that he was so wrapped up in his pretend badge game, he forgot how important the real badge was for Koko, he takes it upon himself to be her number one cheerleader. Koko is flagging, but with Emery's encouragement, she bursts through the finish line! Emery learns that he doesn't need badges anymore - it's enough to know he's done a good job.

Toot doesn’t want to do track inspection with Hoot. To get out of it, she pretends she isn’t feeling well. At first she enjoys getting lots of attention, but when Morgan thinks her flywheel needs replacing, which means having her engine taken out and spending the night in the repair shed, Toot realises she’s gone too far.

Wilson is asked to take Mayor around town but he forgets the passenger car. Hoot & Toot are given a Gold Wheel for delivering a passenger car to Wilson without being asked. Gold Wheels are awards for doing something extra special without being asked. Hoot & Toot try to teach themselves how to use the different wagons to earn another gold wheel but they make a huge mess!

Wilson picks pumpkins for Frostini's harvest festival pumpkin ice cream. Hoot & Toot are Frostini's special helpers too, Wilson doesn't want to share the job. He speeds off with the ice cream and goes so fast the ice cream falls in the stream. There are no pumpkins left! Hoot & Toot get lost in the forest while trying to find cream.

It's a scorching day in Chuggington and there's a Rollo show to parade the latest wagons in front of all the chuggers. Chatsworth directs the chuggers and makes them practice their moves. Hodge can't wait to see latest wagon, he doesn't want to be late for the show but Eddie thinks he's overheating.

Mtambo is teaching the trainees about camouflage, so they can get close to the animals in the safari park to complete their advanced Safari training. Brewster and Koko help each other cover themselves in leaves so they are almost invisible. Wilson can't find any leaves so he think of a new camouflage idea. He has a trainwave and heads to the spray booth.

The trainees are playing "Hidey chugger" in the Roundhouse Park when Koko comes across Hodge playing a chugnav game. Koko wants to beat Hodge's top score, she forgets about Wilson and Brewster and goes off to try and complete all the levels of the chugnav game. Old Puffer Pete has broken down, Vee asks Koko him back to the depot but the game distracts her and she forgets all about him.

The trainees are preparing for a game of tandem chug-tag. Koko and Wilson need to complete their Advanced Storm Training so they don't have time to practice for the game. In a hurry to finish, Wilson turns the storm maker up so high Koko is floating in the wind above the tracks! She shouts STOP and lands on the track with a thump. One of her wheels is damaged! Morgan has run out of spares so Wilson takes the magnetic crane out to try and find enough metal to make a new wheel. He turns the magnetic crane up to it's highest setting and gets stuck to it. Wilson manages to wriggle free and heads back to the depot. Along the way all the metal objects near him start to stick to his body, he's covered!

Zephie delivers the new spray head to Lori and gets stars painted on her face as a reward. When Emery sees her, he wants one too but Zephie says he must do something special to be in her Star Club. Wilson tries to something special too much Zephie isn't impressed. Hoot doesn't make it in the club but Toot does. Lori paints two suns on Wilson and so now he's in Wilson's Sunshine Club.

Action Chugger's staring in a new movie, he's going undercover as a ordinary chugger. He needs to practice for the role so disguises himself so the other chuggers can't recognise him. The disguise isn't working very well as everyone knows who he is. Action Chugger tries to help the ordinary chuggers as they don't have super hero powers but he ends up making a mess and annoying them.

Brewster overhears the Mayor is interviewing Action Chugger about "Sky High Flyer", a film about making the most of what you have. Brewster wants to be a film maker too so offers to help the Mayor by making a film for her presentations about who puts the chug in Chuggington. Things don't quite to plan as he can't find anything exciting enough to film.

While delivering some special equipment to the safari park, Mtambo asks Koko if she can keep a secret. Tonight, they are hoping to catch a very rare site on camera, a luna dance performed by the bats to a special bird song. Dr Gosling wants Koko to record the sound but she's can't tell anyone about it, they need the safari park to be completely silent or they might scare the bird.

Hoot and Toot are starting to do things on their own, Hoot has a delivery to make. All the other chuggers are so busy they can't play with Toot. There's a buzz of excitement on the tracks, there is a new trainee moving to Chuggington! Everyone hurries to get back to the depot to greet Piper when she arrived.

Skylar is doing some rescue training with the trainees, if they pass they get some high visibility stripes and a place in Skylar's Squad! Olwin helps Sylar by taking Hoot and Toot off for some extra training. They play a game of hidey chuggers, Hoot and Toot try to find Olwin. They think they hear her down a tunnel in the mountain but they have been following their echo.

It's a busy morning in Chuggington, Piper is called to the main depot. Pete helps her as she is still very wobbly on her wheels. Piper is given her trainee badge and Pete takes her to the park for some training. Wilson, Brewster and Koko are doing some safety training with Skylar in the mountains. They are learning how to use the chug catcher.

Dunbar has some news, he's leaving Chuggington to do some traveling. Brewster is very sad to see Dunbar go so makes him promise to say goodbye before he leaves. Skylar is going to be the trainees new trainer, he's fresh from the training academy. He starts with some crane training and explains it's all about focus and flow.

Wilson saves Koko from a collapsing mine, proving that he is the brave new hero of the rails.

When Emery breaks down in the forest, it's Chug Patroller Wilson to the rescue.

Koko learns to use how to brake at high speeds and Brewster learns that he has a good eye for track-laying.

Brewster tells Koko and Wilson that he is making ballast with Speedy McAllister. Koko then goes to practise with Hanzo, she practises letting go of her carriages in emergencies.

The Chuggineers demolish an old cooling tower and Brewster cannot wait to see it come down, but an urgent job means he may miss the explosion.

Wilson's new Chug Patrol skills are put to the test, but things go awry when he forgets something important.

Zack becomes trapped when an old rickety bridge collapses, prompting Brewster to use all his craning skills to lift him safely out of the high tunnel.

Zack, Tyne, and Fletch get stranded by some washed out tracks due to a heavy flash flood.

Koko takes some very important visitors including the mayor on a tour.

Brewster and Koko get stranded on the opposite side of a broken track that the Chuggineers are repairing.

Brewster must take the mining equipment to the site, but when his pulling team is taken away, he will need to find a way to help his replacements

Wilson helps out when Old Puffer Pete goes sleep-riding around Chuggington.

Hodge gets stuck high up in the air, but Wilson's clever thinking saves the day.

The chuggers make preparations for the Winter Parade through Chuggington.

Fletch is trapped in a snowdrift in the mountains and Wilson must rescue him!

When Brewster slips into the river, Wilson must act super-fast and help his friend.

The Chug Patrollers rescue Eddie from the side of a bridge using a banner as a sling.

When he runs out of Water, Wilson has to think on his wheels during fire training.

When he runs out of Water, Wilson has to think on his wheels during fire training.

Brewster has his first chuggineer test and Wilson is on Safety Patrol.

Brewster and Cormac chase a runaway circular tunnel entrance through the countryside.

The Chuggineers compete with the Steam Team for the coveted Iron Chuggers title

Something goes wrong when the chuggineers are building a bridge.

During training, Wilson and Chug Patrol must evacuate animals from the Safari Park.

The Speed Fleet, Chug Patrol and the Chuggineers compete in the Track Dash fun race.

Koko tries to break a speed record at the Chug-a-Sonic Speedtrack.

The Chuggineers construct a mighty bridge and a very long tunnel that form the new high-speed link to Tootington.

Also known as "Snow Patrol" and "Winter Whiteout" Wilson has lots of rescuing to do with winter weather.

Koko and Skipper Stu both learn something about getting deliveries done on time.

The trainees set out to San Locomta to cheer up a homesick Rosa. The chuggers soon learn the best holiday traditions are the ones made with your friends.

It's time for a brand new holiday in the great big world of trains - Chuggington Day! The trainees embark on an adventure to remember, including a scavenger hunt and a quest for the perfect statue! The trainees learn the importance of training together.

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