Mail from forty years earlier is discovered, and a letter from Homer Simpson's mother's old boyfriend states that he is Homer's true father. Homer sets out to find his supposed new father, leaving Abe behind.

Lisa sets out to restore the tarnished reputation of Springfield’s first female inventor. To find her invention, she scours an abandoned asylum and a restaurant that caters to men. Bart joins Lisa at the asylum, stealing one of the homicidal patient’s notebooks, and bragging to the boys at school that he wrote the entries himself. This revelation causes Homer and Marge to believe he is a sociopath, which Bart decides to use to his advantage until things go too far.

Helen Lovejoy's request for a youth pastor is answered by Bode Wright, a charismatic young preacher from Michigan. When Bode quickly has the Springfield congregation enamored by his easy-going and liberal approach to religion, an outcast and suspicious Reverend Lovejoy decides to look into the newcomer's past.

While Bode has won over most of Springfield, he finds one churchgoer he can't sway in Ned Flanders. Meanwhile in Michigan, Reverend Lovejoy finds the ammunition he needs to get rid of his replacement.

A musical comes to life in Springfield as Marge stages a revival of her beloved high school show - but her wonderful memories are threatened by the return of a rival from the past.

Things for Ned and Homer go from bad to gosh-darn worse in the stunning conclusion of this 'Simpflix' prestige crime thriller.

Smithers finds true love with a famous fashion designer, but will his new relationship destroy Springfield?

Lisa meets the son of the late musician Bleeding Gums Murphy - and attempts to improve his life.

A surprise from Marge's past has her bonding with Bart and terrifying Homer.

When Ned Flanders falls on hard times, Fat Tony makes him an offer he can't refuse.

After Bart is turned into an NFT, Marge fights though the blockchain to rescue her son. To track down a gruesome serial killer, Lisa turns to a murderer from her past. An outbreak transforms Springfielders into a plague of lazy, beer-loving oafs.

Lisa recounts the story of how Homer was scapegoated for a power outage that plunged Springfield into darkness days before Thanksgiving.