1The Serfsons
In a magical medieval world, Marge's mother is turned into an Ice Walker and the only way for Homer to afford the cure is to force Lisa to use illegal magic. When the King discovers this, he kidnaps Lisa, and Homer must lead a feudal uprising to save her.
2Springfield Splendor
Marge and Lisa turn Lisa’s sad experience into a successful graphic novel-turned-Broadway show, but they struggle with creative differences and ego.
3Whistler's Father
Homer discovers that Maggie is a whistling savant and launches her baby-celebrity career. Meanwhile, Marge impresses Fat Tony with her interior design taste, and he hires her to style his brothel.
4Treehouse of Horror XXVIII
Maggie becomes possessed by an ancient demon, Lisa discovers a creepy/perfect version of her family in an alternate universe and Homer cannibalizes himself.
5Grampy Can Ya Hear Me
Grampa gets a hearing aid and finally hears what everyone has been saying about him. Meanwhile, Mr. Skinner discovers that his mother has kept the ultimate secret from him.
6The Old Blue Mayor She Ain't What She Used to Be
Frustrated with the local government, Marge decides to run for Mayor. To win public support, she begins making Homer the butt of her jokes.
7Singin' in the Lane
Homer and the guys try helping Moe cheer up by getting their old bowling team back together again, but they soon face a team of arrogant millionaires.
8Mr. Lisa's Opus
As future Lisa writes her college application essay for Harvard, she recalls past disappointing birthdays that helped shape her.
9Gone Boy
When Bart goes missing, the town puts together a search party to find him. After most give up hope, Sideshow Bob manipulates Millhouse into revealing where Bart is hiding.
10Haw-Haw Land
When the Simpsons go to a STEM conference, Lisa falls for a crooning jazz pianist named Brendan. Meanwhile, Bart discovers that he has an affinity for chemistry
11Frink Gets Testy
Mr. Burns will build a doomsday ark after he believes that the end of the world is near when he sees an old Orson Welles show about Nostradamus. Meanwhile, Professor Frink comes up with a new way of testing everyone in Springfield after Burns wants a test to determine who should go on a spaceship with him.
12Homer Is Where the Art Isn't
When Homer is accused of stealing a million-dollar painting, only a detective from the 1970s can clear his name.
133 Scenes Plus a Tag from a Marriage
Homer and Marge recount the story of their transition from loving their life without kids to being miserable parents.
14Fears of a Clown
Everybody is now horrified of clowns after Bart's prank using clown masks, which also causes Krusty to lose his job. He attempts a comeback as a dramatic actor in the play "The Salesman's Bad Day", with Llewellyn Sinclair as his director.
15No Good Read Goes Unpunished
In an attempt to bring the family together, Marge forces everyone to hand in their electronics and take a trip to a book store.
16King Leer
Homer and Marge follow Moe after the bar closes early and discover him and his father fighting. The Simpsons, after finding out that Moe has been excommunicated from his family for years, attempt to bring them back together.
17Lisa Gets the Blues
When the Simpsons' flight to Gainesville gets re-routed to New Orleans, Lisa is forced to face her failures, and regain her confidence as a jazz musician. Meanwhile, Bart is intrigued by the voodoo in Louisiana, and Homer is intrigued by the drinking.
18Forgive and Regret
Grampa makes a confession to Homer while on his deathbed. After his recovery, he comes to realize that this issue will not be easy to reconcile.
19Left Behind
Homer gets Flanders a job at the plant, and he soon learns that no good deed goes unpunished when Flanders starts to insist on carpools and demands more from Homer's work performance. Meanwhile, Marge feels as though their marriage has lost its spark.
20Throw Grampa from the Dane
The Simpsons go to Denmark so Grampa can benefit from its free health-care system.
21Flanders' Ladder
Bart falls into a coma after being struck by lightning.