When a video of Bart and Homer fighting goes viral, they begin a journey as social media celebrities; Lisa battles the school's new industrialized detention system.
Homer is demoted and must supervise interns, among whom is a go-getter who asks Homer to be his mentor; when Homer inspires him to start a business of his own, the two find themselves being chased by the mob.
During the San Castellanta street festival, much of the town finds their wallets have been pickpocketed; after the state investigator puts the wrong man in jail, Chief Wiggum sets out to catch the real criminal and show he's still up for police work.
Milhouse is trapped in another dimension; dead Homer's spirit tries some new bodies on for size; Selma finds love in an unlikely place.
After a trip to Aquatraz Water Park, Lisa becomes determined to set free Springfield's most vicious animals in captivity; Homer fulfills a lifelong dream of buying a boat, and quickly realizes boat ownership sucks.
When Marge realizes that everyone views her as boring, she takes up woodsman competitions as a hobby, which takes her on a month-long retreat to Portland with her trainer.
The Simpsons join other Springfield families on the Van Houtens' annual trip to Costa Rica, which they obviously can't afford; Homer befriends Patty's new girlfriend; Lisa tracks down the real reason the Van Houtens can go on this trip every year.
The Simpsons are forced to face various Thanksgiving nightmares, including the first Thanksgiving, an artificial intelligence mishap and a dangerous space mission complicated by a sentient cranberry sauce.
When Todd blames God for the death of his mother and rejects his faith, Ned sends him to live with the Simpsons in an attempt to scare him back into God's arms.
Sideshow Bob gets contracted as the mall Santa; someone steals all the Christmas packages off people's front porches.
Homer and Marge attend Artie Ziff's wedding and become quite uncomfortable when they realize that his bride-to-be is a clone of Marge; Lisa grapples with the misogynistic implications of the popularity she receives after getting her new braces.
The sea captain finds a treasure he's been searching for all his life, but it's taken from him by the townspeople; Marge convinces the people of Springfield to build a STEM school.
Homer and Marge compete to be the topic of Lisa's "Most Interesting Person I Know" essay; Professor Frink develops a cryptocurrency, overtaking Mr. Burn's title of richest man in Springfield; Mr. Burns schemes to take his title back.
Bart accidentally sees a new superhero movie a month before it comes out -- and the world cowers before his newfound plot-spoiling powers.
When Marge implements a screen time limit for the whole family, she realizes that she is the one addicted -- not her husband and children.
Bart bonds with Ned Flanders, which leaves Homer jealous, so he retaliates by mentoring Nelson Muntz; a heroic act by Homer makes Bart look up to him again.
When Maggie goes to preschool, Marge decides to get a job to pass the time and ends up working at an upscale weed dispensary; Homer decides to open his own dispensary that mimics a sketchy drug deal, putting their two businesses at odds.
Cletus becomes a helium tycoon; Maggie reunites with baby Hudson.
When Bode, a young charismatic new preacher, comes to town and shakes things up at church, Reverend Lovejoy investigates his mysterious past.
In Michigan, Reverend Lovejoy uncovers the reason why Bode left and came to Springfield; when the congregation learns of his crime, they must decide whether to banish their new priest.
Lisa makes a new friend who loves horses, but then becomes part of a circle of snooty young rich girls; Homer takes Marge on a romantic cruise.