Everyone loves a joker - right?! At Spiro Agnew Elementary School, fifth graders are at the top of the food chain. Kings of the jungle. The cream of the crop. In short, they rule the school. And class clown Justin Fisher-Fish-rules them all. Fish is the funniest kid in school. He's always playing pranks and goofing off. But this year not everyone is amused. What happens when the funniest kid in school isn't so funny anymore?