With the help of eyewitness Homer Simpson, Krusty the Clown gets busted for robbing the Kwik-E-Mart. Convinced that his hero is wrongly accused, Bart, with Lisa's help, examines the clues and case and determines that Krusty was framed by his bitter sidekick, Sideshow Bob. Krusty is cleared and Bob begins the first of his many prison terms.