Marge sends Lisa to a performing arts camp, where counselors and fellow campers inspire her to embrace her creative side; upon returning to Springfield, Lisa grows restless with her boring suburban lifestyle.
Grampa gives each family member a portion of his savings; Lisa worries that Nelson's instant success with a new business venture might lure him away from continuing his education.
Lisa starts coaching Bart's Little League team; Marge and Bart spend the day at an amusement park, where former MLB manager Mike Scioscia gives Bart advice.
Worried about the effects of violent video games, Marge encourages Bart and Milhouse to play board games; Lisa becomes smitten with a new student, a vampire; while on a second honeymoon, Homer and Marge rescue a castaway who escaped from his ship.
Fearing that she will end up like Marge, Lisa pledges to focus solely on her academics and not get distracted by other things; Bart puts Nelson in his place and unintentionally earns the title of school bully.
Mr. Burns becomes distraught at the town's apathetic reaction to the announcement that he has only weeks to live; Bart secretly takes Burns into the family's home.
Homer ends up in the Springfield penitentiary after getting caught bribing an official; an FBI investigator offers Homer a way to reduce his jail time.
When Smithers transforms Moe's pub into a refined and trendy lounge, the establishment becomes Springfield's local gay hangout; Principal Skinner falls for the new, free-spirited music teacher.
During a field trip, Lisa discovers desert water that makes usually combative creatures get along; after getting kicked out of the retirement home, Grampa comes to live with the family.
When Cheech and Chong stop in Springfield while on their reunion tour, Homer impresses Cheech so much he asks him to replace Chong; Principal Skinner forms a new comedy team with Chong; Marge tries to help a hoarder.
