Lady and the Tramp

Liz has to deal with Floyd's return and learning he and his fiancee are in the running to get married on The Today Show. After the writers prank Danny, Jack helps him get his revenge. Jenna and Tracy are left scarred after hearing Kenneth's various tales for hours on end.

Brian enters a dog show at his own expense to earn the Griffin family money to buy a new air conditioner, but quits during the show after taking offense when Peter puts a bone biscuit on his nose. He temporarily runs away from the family but is caught and returned to the Griffin household by the police. Peter is fined and argues with Brian, who eventually decides to leave the family. Peter soon searches for Brian, who has been ridiculed by the community and has slowly become unstable. Peter finds him in the streets of Quahog attacking its citizens, but arrives too late, and Brian is arrested. Brian is given a death sentence, but Peter delivers an emotional appeal on Brian's behalf, and the charges are dropped. Brian achieves the respect of the townspeople.

Peggy asks Molly to watch her dog while she has gallbladder surgery. Mike also tells Molly he wants her buried next to him.

Bob and Gene bond over classic Western movies, making Louise feel left out.

When a second fourth grade class comes in to Mrs. Krabappel's class during her absence, Bart falls for a girl named Nikki, who kisses him, then treats him like dirt. Meanwhile, First Lady Michelle Obama teaches Lisa that there is no shame in being an overachieving girl.