Season 24

Bart will be visited by many of his past girlfriends.

A black hole threatens to swallow Springfield, Homer tries to find the source of paranormal activity, and a "Back to the Future" parody in which Bart keeps Marge from marrying Homer.

When Marge's car falls into a sink hole, she buys the perfect replacement to fit her family of five. But she quickly grows to hate it because, as she tells a shocked Homer, the car would be too small if she wanted to have another baby. Meanwhile, Bart and his friends are determined to find out what secret Lisa is keeping when Bart finds her cryptic messages and follows her sneaking off downtown for covert meetings after school.

Homer and Marge try to track down Grampa by following clues that lead to secrets from his past.

Homer is shocked to discover that his bowling teammate is an accountant for Fat Tony and his mob. When Fat Tony gets jury duty, he appoints Dan as the temporary don of the mafia. Meanwhile, Lisa adds insects to her vegetarian diet after she passes out in the middle of a saxophone solo, but starts questioning her decision when bugs start pleading for mercy in her dreams.

Homer wins a MyPad at the school auction and Steve Mobbs, who is now in heaven, talks to Homer through it. Homer goes into a funk when he breaks the myPad, until Ned Flanders discovers a miracle tree in the Simpsons' back garden.

A "cool family" from Portland moves in next door to the Simpsons. Homer is desperate to befriend them, while Marge is skeptical, thinking that being cool is not all it's cracked up to be.

Grampa has to move into the Simpsons house following a fire at the retirement home, and on moving day, Homer 'throws his back out' and 'rests' at home. He later finds an advert for a video game, Villageville on his myPad, and starts playing. During that time, Homer loses Santa's Little Helper. When the family find him, Homer doesn't seem to care because he's "not a dog person". Grampa later tells the rest of the family the story of Homer's childhood companion, pet dog Bongo.

Homer joins the "Springfield Preppers," an off-the-grid survivalist group whose leader has set up a top-secret retreat outside of town to prepare for the end of the world.

The fate of Springfield Elementary rests on Bart and his test scores, and Homer finds way to make money with his own parking meter.