Koko’s confidence is shaken after she gets in an accident. Scared and second-guessing herself, will she be able to regain her speed in time to help save Wilson and Brewster from trouble?

When Brewster’s hero can’t make it for Hero Day, he and Zephie set off on their own hero duty and learn what makes a real hero along the way.

Wilson is excited about being the new voice of Radio Chuggington, but when the chuggers decide to see a movie over listening to his radio stories, he exaggerates a news story that causes the town to panic!