When the Simpson family is at the Costington's department store, Bart uses the wedding gift registry as a prank to register himself and his bride, "Lotta Cooties", for wedding presents. Bart invites many people to his so-called "wedding" and plans to take all the unused gifts back for store credit, but he is stopped in his tracks by Chief Wiggum, who arrests Bart. Bart tries to bribe Chief Wiggum with the wedding presents, but Chief Wiggum only accepts cash bribes, as stated on his badge. Bart is sentenced to six months of juvenile detention by Judge Constance Harm.

At the detention center, Bart is being harassed by Gina Vendetti, who ties him to the fence and uses a knife to destroy his uniform and threatens to castrate him if he tries anything. Bart is afraid he will be buried alive in the sandpit or photographed being punched while going down a slide. Bart has another problem when he is partnered with Gina Vendetti for the "prom" by the warden. When they are dancing, Gina escapes with Bart using a rope, finding themselves on a window ledge. But due to the fact that they are handcuffed together, she automatically brings a reluctant Bart along before the window could be closed (though he only comes after she kisses him). Slowly, they gain each other's trust. It is publicized on channel 6 news of the escape and the Simpsons see it. It sees 159736 by Bart and 139813 by Gina.