Homer's lost the TV remote, which was swallowed by Santa's Little Helper and in the chaos that follows Bart sees a commercial for a rap concert and wants to go. Bart gets permission from Homer, but when Marge finds out and disapproves, Homer quickly changes his position. Bart sneaks out and goes to the show anyway. He is in the front row of the show and when the microphone comes his way he winds up rapping on stage and holding his own and gets 50 Cent (as himself) to invite him on his tour. He gets back home only to find out he is going to be in big trouble; to prevent that he decides to fake his own kidnapping. The police are on the case; meanwhile Bart finds Milhouse and hides out in his dad's bachelor apartment.
Chief Wiggum decides he needs to do something to improve his reputation as a police officer and puts the clues together to find Bart at Kirk Van Houten's apartment. Wiggum is hailed as a hero and Milhouse's father is in jail. Wiggum has been promoted to Police Commissioner but Bart, feeling guilty about getting his friend's father put in jail, comes clean about faking the kidnapping. Wiggum shows Bart that everyone is better off believing the lie, Milhouse's dad is being worshipped by prisoner loving woman and he gets three square meals a day.
Back at the house, Lisa has found a clue that proves Bart wasn't kidnapped. She tries to tell Homer, but he has sold the story to Hollywood. Lisa goes to Principal Skinner for help and the pair begins an investigation that will unravel the lie that is benefiting everyone. Bart takes the other conspirators to rapper Alcatraz's crib to prevent Lisa and Skinner from finding the truth. They arrive too late, only to find out that they know the truth. Bart and Homer try to convince Lisa to be cool about living the lie and a house party ensues.