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.
After Bart nurses an injured bird back to health, Homer enters it in a race.
When the rest of the family seems to lack Christmas spirit, Marge contacts Martha Clause (guest voice Martha Stewart).
Homer ends up in the Springfield penitentiary after getting caught bribing an official; an FBI investigator (guest voice Jon Hamm) offers Homer a way to reduce his jail time.
Marge reconnects with a close group of mothers she used to be friends with; Bart tries to break up their group when his playdates stop being fun.
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 (guest voice Kristen Wiig).
When Homer insists Bart must earn the new dirt bike he wants, Bart comes up with a scheme; James Lipton interviews a TV cast.
Moe attends a seminar in hope of gaining more confidence with women; Marge makes a change after discovering her gray hair.
Bart's film about an angry father quickly becomes a critical favorite, winning him several awards.
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.
Marge persuades Homer to enroll in a fathering enrichment class; Bart becomes a school bully.
When the Great Raymondo takes Lisa on as his magician's assistant, she is conned into revealing the secret of his greatest trick to his nemesis.
Fat Tony and Marge's sister, Selma, fall in love and get married; Bart discovers a special ability.
Homer opens his own hair salon after discovering he is a talented stylist; Milhouse professes his love for Lisa.
After finding the keys to every door in Springfield, Lisa finds a hidden room beneath the elementary school.