Chuggington (2008)

Season 1: Episode 34

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.