Homer's mother returns to Springfield, and the city pardons her from the charges against her. Mr. Burns is furious about this and makes a plan to get Mona Simpson in prison.
After spending all his money on an expensive gift for himself, and the family thinking he should be less of an egoist, Homer decides to change his ways.
Marge takes up heavy drinking to spend more time with Homer. Bart and Lisa confront a famous movie director about the drop in quality his films have taken.
After playing a prank on the whole town, Bart is sentenced to six months of juvenile detention. There he meets Gina, who forces Bart to escape with her.
Marge and Homer find out that they actually kissed each other at age 10 without knowing they were each other's first kisses, and tell the story about this.