When the employees at the power plant start to resent Mr. Burns, he devises a plan to go in disguise as a man named Fred to find out who dislikes him, but Smithers ends up ruining his plan.
When the Simpsons visit a museum exhibit, Marge and Homer are told a story by the curator about a gladiator in Ancient Rome who unlike Homer is fearless and driven.
When Lisa falls sick, she stays home from school and starts reading an art book, as she imagines herself and her family as famous artists who get into various adventures.
Bart finds himself targeted by his own toys that seek revenge for his bad treatment of them. After a mishap with a vending machine, Homer sees other versions of himself that came through a portal. Lisa has an unusual ninth birthday that involves being stuck in a time loop.
When the family goes on vacation to New England, Homer stays home by himself where he becomes the object of affection of a charming English woman.
When Grampa is accused of killing his girlfriend, Marge and Lisa decide to step in and solve the mystery after becoming obsessed with true-crime podcasts. Meanwhile, Kent Brockman makes his own podcast about the incident.
Comic Book Guy devises a plan to realize his dream of working at Marvel Comics. Lisa faces a surprise when she falls for a new kid who plays the saxophone. Bart is embarrassed by the role he's playing as a voice-over actor.
In an attempt to get to know Superintendent Chalmers better, Principal Skinner goes with him on an 800-mile trip to Cincinnati to attend an administrator's convention.
When Lisa clashes with Miss Hoover over getting a B- grade for a project, Lisa ends up in detention, where she comes to learn how to be more understanding.
As a cable channel films a Christmas movie in Springfield, they send film producer Mary there where she ends up staying with the Simpsons, who each have their own agenda. Mary makes a deal with Skinner regarding her film.
When Comic Book Guy and his wife Kumiko team up with Homer and Marge for a trivia contest, Kumiko expresses her wish to have a baby, which leads her to argue with her husband who doesn't share her desire.
After Bart finds Mrs. Krabappel's old diary at a yard sale, he comes to learn something about himself that encourages him to enter a spelling bee, with Maggie and Lisa's help.
In hopes of making a lot of money, Bart works as a caddy at a golf course in Springfield, but he faces opposition from Marge who worries about the job affecting his personality.
When Homer hears yokel's singing about family, it inspires him to be a better man for his family, while he becomes Cletus' manager, who ends up replacing him with another manager after he becomes a famous country singer.
When Homer visits a pizza palace, it triggers old memories about his beloved mechanical band that was taken from him. As his family try to help Homer reunite the band, they face competition from producer J. J. Abrams who's going after the same thing.
Homer and Marge tell the kids about a secret room in their house and an event that happened years ago with the Flanders family, after Bart comes across an ornament with Todd Flanders on it.
When Marge chaperones Bart's class, she finds out a surprising secret about Ralph Wiggum's mother Sarah, as she ends up being involved in a jewel robbery.
In an attempt to gain popularity, Mr. Burns decides to start a plant-based burger business, which becomes a big success and causes the Krusty Burger to face failure.
After an embarrassing incident at school, Lisa starts having hallucations about a dejected 1980s British singer, who helps her find her inner strength. Meanwhile, Homer becomes hooked on a new truck.
When the Simpsons go to a magic store, they find out about a future argument between Lisa and Marge that involves Lisa's choices about college and her career.
When Homer meets a British secret agent who is going after a Russian spy, Homer comes to realize that Grampa Simpson might be the mystery spy.
After Moe breaks their sacred code, a secret society of bartenders set out to have their revenge from Homer and his friends, as they inject them with a serum that prevents them from drinking.