Lisa discovers Marge's vintage clothes from the 90's and is welcomed into the school's elite fashion club.
Homer gets Superintendent Chalmers a job at the power plant; Chalmers discovers huge mutated snails that produce valuable slime, launching his new career.
The town is menaced by a mysterious murdering monster from out of the sewers; Krusty has a demonic special guest on his live Halloween special; Springfield's post-apocalyptic future.
Marge turns to a Man Camp to save the men of Springfield from themselves.
Homer and Marge can't decide if Bart is naughty or nice.
When Bart becomes Professor Frink's lab assistant, the Simpsons are thrown into a world of tech billionaires determined to live forever.
Bart runs against Mayor Quimby's son for student council president; Lisa learns troubling secrets about the Quimby clan -- and about the Simpsons.
After a mysterious buyer purchases every ticket for the K-pop concert Lisa wants to go to, the Simpsons have to figure out the identity of this evil ticket reseller.
Patty and Bart team up for the ultimate prank -- getting Homer declared legally dead; to their chagrin, Homer loves being officially dead -- which leads to Patty and Selma having a huge fight and Patty moving away to "Palm Springfield."
When Principal Skinner discovers that one of his students is a runaway who has been living in the school library, he has to take the snarky, difficult kid into his home and is forced into a role he never expected or wanted -- being a parent.
Set in the near future, Marge is competently coping with the hormonal onslaught hitting her now teenage kids.
Homer revitalizes Bumblebee Man's career when he becomes his secret stuntman.
Homer's enthusiasm skills land him a job at a secretive company with a mind-altering agenda.
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.
When Marge tries Homer's new high-tech glasses on, he learns she's seeing a marriage counselor; Bart refuses to buy Nelson a Valentine's Day card.
Marge and Lisa's plans for a mother-daughter Valentine's Day take a turn when Lisa falls for an adventurous and intellectual romantic; Bart and Milhouse investigate Springfield Elementary's legends.
Moe attends a seminar in hope of gaining more confidence with women; Marge makes a change after discovering her gray hair.
Homer and Lisa engineer a takeover at the nuclear power plant with Homer as the new CEO.
The Simpsons play Cupid for Principal Skinner and Marge's sister.