Jun breaks the rules by sneaking a small, adorable dragon out of the Crystal Realm and bringing it home, but finds that her older brother, Eugene, has arrived and watches her every move.

Tom has to keep his mom, Olivia, distracted while Jun, Alex, and D’Angelo use a new dragon to close off a cave leading to the Crystal Realm, and prevent her from discovering the dragons.

When Feather is taken by a group of what appear to be zombie dragons, Alex finds her inner hero and rescues her friend.

Tom and Thunder train a new species of aggressive tidal dragons to help the other riders put out a forest fire threatening ICARIS.

Tom and D’Angelo must come together to help Alex and Jun escape the clutches of the Spiderwings.

Tom and the riders go in search of Thunder and must face a gauntlet of dangerous dragons to find their lost friend. Along the way, Tom reveals his big secret to D’Angelo and Alex.

Tom and the riders help Thunder, who is seeking revenge against the dragons that chased off his family.

Tom hatches an unorthodox plan to use a Monstrous Nightmare to test Alex's new fire suit, endangering the secret of dragons.

After a fight with her mom, Jun joins Tom on an adventure into the Fire Realm, where her knowledge of myths saves the day.

When a tiny Fireworm dragon ends up at ICARIS, Alex must decide between her mom's excitement and keeping the dragon secret.

During an attempt to get displaced Fire Gronckles back to their native realm, D'Angelo accidentally feeds them Catastrophic Quaken eggs.

Eugene discovers the Lair and demands a dragon of his own.

The dragon riders must sneak a very sick Magma Breather into the ICARIS infirmary.

The Sky Torcher and Flame Throwers invade the Crystal Realm; Tom must conquer his demons and bond with the Fault Ripper to defeat the Sky Torcher.

Tom and the riders discover the Ice Realm and find Buzzsaw inside.

Alex and Eugene find themselves at odds with Tom and their fellow dragon riders when Feathers and Webmaster go missing during a blizzard in the Ice Realm.

Jun struggles to convince Tom to trust her faith in myths over the Book of Dragons when they venture to a place that his book seems to say is extremely dangerous.

Tom’s leadership abilities come into question by Eugene when his decisions lead to failure while attempting to confront Buzzsaw.

Tom and Thunder discover a baby Nightlight and must bring him back to Thunder’s home realm.

When Thunder’s clan of fellow Nightlights is attacked by the Snow Wraith, Tom vows to rescue them.