After Ned sustains a head injury, he begins to predict people's deaths. Lisa and Bart track a serial killer in Victorian London. Maggie is shrunk down and swallowed by Burns and the rest of the Simpsons clan go into his body after her.
Bart finds inspiration in a old, tossed-out copy of Playdude. Marge will stop at nothing to win the Ovenfresh Bakeoff, especially when the other competitors start to sabotage her creation.
Marge feels charitable towards Nelson and brings him into the Simpson home. Bart tries to locate Nelson's parents in an effort to get rid of him. Bart asks for a party in recognition of his first 100 test score. Lisa develops esteem issues when she's told she has a big butt.
Marge ponders how her life may have turn out otherwise when a successful high school friend visits.
Bart finds his calling making novelty t-shirts, but Homer feels neglected and put out by Bart's success.
Burns cancels the plant's prescription drug plan and the rest of Springfield follows his lead, prompting Homer, Grandpa, Apu and Flanders to go to Canada to buy fake health-care cards.
Marge partners up with Moe to ensure the safety of Homer's investment in Moe's Tavern.
Homer's public display of humiliating Bart garners the attention of professional athletes seeking victory celebrations. Eventually, Homer's success grows to the point where he earns the right to produce the Super Bowl halftime show. Ned starts piecing together Bible-influenced movies. When he loses Burns as his backer, he teams up with Homer to create a religious halftime show.
Bart fakes his own kidnapping to escape punishment after being caught sneaking out of the house to go to a rap show. When the "kidnapper" is caught, Milhouse's dad goes to jail and becomes popular with the ladies and Wiggim is promoted to police chief. Lisa and Skinner try to expose the lie.
When Springfield legalizes gay marriage, Homer cashes in by being ordained as a minister.
After a horrendous field trip, Lisa files a restraining order to keep Bart away from her. Homer steps into his father's role of Sprawl Mart greeter.
Selma frets over her lack of a child and decides to adopt a baby from China. In order to fill out the paperwork, however, she has to have Homer pretend to be her husband.
Marge starts pinching pennies when she discovers that Homer is uninsurable. Marge forces Homer to live in the RV he purchases after he goes behind her back to do so.
Marge tries to make Springfield's image more upscale, but when the concert hall falls to misuse, Mr. Burns steps in and turns it into a prison. When Wiggum decides to enforce archaic laws, Homer ends up in jail for kicking a can and becomes a snitch, further endangering his life. Lisa learns that the Simpson's cat has another family.
Professor Frink tries to get the two eldest Simpson children to get along and his invention gives Bart and Lisa a glimpse of their futures.
Marge starts to think that the roofer known to Homer as Ray Magini is actually a figment of his imagination when he never shows up to fix the leaky roof. Dr. Hibbert performs shock therapy on Homer.
Bart gains so much weight due to the unhealthy vending machines installed at school that he suffers a heart attack. The Simpsons send him off to a fat farm to try and bring his weight down and turn the house into a hostel in order to pay for it.
Homer gets full of himself when he guides Lisa to victory in Krusty's "Li'l Starmaker" contest. When he becomes overzealous, she fires him and Homer takes the competition under his wing.
Homer's Doomsday prophecy starts to attract followers when some of his signs ring true, but he becomes a laughing stock when he miscalculates.
When Ned rents out a room to two college girls, their internet-based adult activities cause him to move out of town. Homer decides he wants Ned back when he finds the new neighbor even more annoying.
Marge enrolls Bart in a Catholic school and Bart eventually finds an ally in his studies there in the form of a hip priest, Father Sean. Homer is also lured back to the church with talk of beer and pancakes.