The Simpsons return from trick-or-treating and begin choking, burning, and beating each other. Bart and Lisa end up in a hospital, where they arm themselves with surgical instruments and fight. Kang and Kodos observe the carnage… and wonder why a Halloween episode is running in November.

“Reaper Madness”
The Grim Reaper shows up at the Simpsons’ front door and announces it’s Bart’s time to die. He pins Bart against a wall with his scythe, then reaches out to touch him. Suddenly Homer appears and bludgeons Death with a bowling ball, killing him. Lisa realizes Homer has created a world without death. Soon after, residents throughout Springfield realize they’re immortal. Homer grows nostalgic for the good old days and dons Death’s robe. Moments later a scythe and scroll materialize in his hands. On the scroll is a list of names, including Jasper. Homer carries out his duties, and then attempts to kill Mr. Burns, only to realize the old man has some tricks up his sleeve. One morning Homer awakens and looks at the scroll… and sees Marge’s name. Homer is shocked, yet nonetheless raises the scythe over Marge’s head. Later Homer carries Marge’s body to a summit and asks God to release him from the “ghastly vocation.” God does so, only to realize that Homer tricked him by knocking off Marge’s sister, Patty.

“Frinkenstein”
A Swedish scientist phones the Simpson house with news that Professor Frink has been awarded the Nobel Prize. Lisa relays the exciting development to Frink, who laments that his father will never know of the accomplishment, as they lost touch years earlier. Lisa tracks Frink’s father to a cryonics lab, where Lisa retrieves Frink Senior’s body. She brings the cryogenic cylinder to Professor Frink, who revives his dad after replacing some of his vital organs with machinery. Frink Senior doesn’t like the idea of being half-machine, so he sets out to replace the organs with fresh ones. He chooses Flanders, Skinner, and a variety of other Springfield residents to supply the body parts he needs. Lisa finds “Frinkenstein” and reminds him about the Nobel Prize ceremony. Frink Senior realizes he mustn’t disappoint his son and flies to Stockholm, where Jennifer Garner and Dr. Dudley Herschbach hand out the award. When Frink walks out on stage, Frink Senior joins him at the podium. They hug. Professor Frink declares it’s the happiest day of his life. Moments later Frink Senior begins popping off the top of scientists’ skulls and ripping out their brains. Professor Frink smashes the Nobel Prize over his father’s head, killing him. Later Professor Frink uses his latest invention, the soul catcher, to communicate with his father.

“Stop the World, I Want to Goof Off”
Bart and Milhouse discover an ad in an old comic book advertising a stop watch that can literally bring time to a halt. They send 49 cents to the address in the ad, and four weeks later, receive the watch. Bart clicks the watch, and sure enough, it stops time. Bart and Milhouse realize that if they both touch the watch, neither of them will be affected by the time freeze. Soon after, they use their new ability to play a variety of pranks, including pulling down Skinner’s pants as he addresses the student body, replacing Reverend Lovejoy with Krusty the Clown during a sermon, and making Homer’s donuts disappear before he can place them in his mouth. When people tire of being humiliated Mayor Quimby lures the pranksters to a meeting hall, which is covered with ultraviolet powder. Bart and Milhouse’s identity is soon discovered. An angry mob chases the pair through the street. Bart again uses the watch to stop time, but then drops the watch and breaks it. The boys realize they’re the only two people left on Earth. Eventually they decide to repair the broken timepiece, but to do so they must first learn another language, as the repair manual is written in German. Twenty years later the boys successful repair the watch and return time to normal. Later Lisa presses a button on the back of the watch, causing her family’s top halves to blast off their bottom halves. She then presses other buttons, causing the family to transform again and again… until they are hula-hooping. Satisfied, Homer tells Lisa to let the family continue to hula-hoop