After making a deal with Homer to get good grades in school, Bart and Lisa go away to Kamp Krusty, "The Krustiest Place on Earth!" While they're initially excited about their summer, they soon learn that Kamp Krusty is a run-down prison run by the tyrannical Mr. Black and his C.I.T. henchmen, Dolph, Kearney and Jimbo Jones. Worse yet, instead of sports and arts-and-crafts, the kids are expected to pass their days sewing counterfeit wallets. The only thing that gets Bart through this ordeal is the hope that Krusty himself will visit, but when that doesn't happen, the kids lead a rebellion against Mr. Black and take over the camp. With Bart as their leader, the kids speak to the media and reveal what a sham Kamp Krusty is. Meanwhile, with Bart and Lisa away from home, Homer and Marge are getting in touch with their relationship. Homer feels so good, he's even losing some weight and growing some hair. This all changes when he sees Bart on TV, condemning Krusty and his ramshackle camp. In the end, Krusty apologizes to the campers and takes them on a trip to Tijuana.