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.

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.

Maggie es poseída por un antiguo demonio, Lisa descubre una versión espeluznante/perfecta de su familia en un universo alternativo y Homero se canibaliza.

El Abuelo se pone un audífono y por fin oye lo que todo el mundo ha estado diciendo sobre él. Mientras, el Sr. Skinner descubre que su madre le ha estado ocultando el secreto definitivo.

Frustrada con el gobierno local, Marge decide presentarse a alcaldesa. Para ganar apoyo popular, empieza a convertir a Homero en el objetivo de sus chistes.

Homero y los chicos reúnen su viejo equipo de bolos para animar a Moe, solo para acabar en una feroz competición contra un equipo de arrogantes millonarios. Mientras, Lisa y Marge intentan enseñar a Bart que el dinero no lo es todo.

Mientras, en el futuro, Lisa escribe su carta de solicitud de admisión para la universidad de Harvard, recuerda cumpleaños decepcionantes de su pasado que le ayudaron a convertirse en quien es.

Cuando Bart desaparece, la ciudad organiza una partida de búsqueda para encontrarle. Cuando la mayoría de la gente pierde la esperanza, el Actor Secundario Bob engaña a Millhouse para que revele dónde se esconde Bart.

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

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.

Homero está acusado de robar una pintura de un millón de dólares y solo un detective de los años 70 puede demostrar su inocencia o culpabilidad.

Homer and Marge recount the story of their transition from loving their life without kids to being miserable parents.

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.

In an attempt to bring the family together, Marge forces everyone to hand in their electronics and take a trip to a book store.

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.

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.

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.

Homero consigue un trabajo para Ned Flanders en la planta nuclear. Mientras tanto, Marge siente como si su matrimonio hubiera perdido su chispa.

Después de recibir un pago del seguro, el abuelo y su familia deciden ir a Dinamarca para que el primero pueda beneficiarse de la atención médica gratuita del país.

Después de ser alcanzado por un rayo, Bart recibe visitas de fantasmas, que quieren un cierre que solo él pueda proporcionar.