When the comic book starring Chuckie's favorite superhero gets canceled, he is too depressed to help Tommy with his science fair project. Armadillo Dave gets canceled and Chuckie breaks down. Tommy has to buy a rat for his project, butÿthe last rat available is a mean one. It scares everybody. Tommy made a simple one lane track for his rat, but needs Chuckie so he can get a good grade on it since Chuckie has done it before. The gang tries to find Chuckie a new hero to worship.