In this Treehouse of Horror XV episode, Kang and Kodos have the Simpson family for dinner with their boss. The meal is a success as Kang gets a hyper-galactic promotion.
The Ned Zone
Homer knocks Ned unconscious with his bowling ball, when he recovers he discovers that he was really dying of a brain tumour & the bowling ball lodged it out (which give him premonitions of doom). He tells Homer about his new power and Homer wants to know his future. Ned sees Homer being shot in the back, and the shooter is he. Ned keeps this information to himself and manages to not shoot Homer. He then finds out that Homer is going to cause the destruction of all of Springfield by destroying the plant’s nuclear reactor. Ned goes to the power plant to try to prevent the catastrophe. Unfortunately, he had to kill Homer to save everyone (but even through that, Homer accidently fell onto the nuclear reactor button still consious from the bullet & killed everyone in the end). At least, everyone is in a better place.
Four Beheadings and a Funeral
The “Mutton Chop Murderer” has taken another victim, and Eliza Simpson and her sidekick Dr. Bartley join with Inspector Wiggum of Scotland Yard to find the killer. The dagger used is the latest crime is found to be one of a set, and they find that the set was owned by C. Ebenezer Burns. They go to the opium den and find that Burns had sold the daggers to a fat man (Homer) to get money for opium. The fat man is caught and sentenced to death, but when Eliza and Dr. Bartley find yet another body, Eliza knows the fat man is innocent and finds an important clue to the real killer’s identity on the latest murder weapon.
In the Belly of the Boss
At the “New Invention Expo” Maggie gets inside of a new vitamin pill that is going to be reduced by Prof. Frink’s new shrink ray. The pill is swallowed by Mr. Burns. The other Simpson family members become bionauts inside a submarine that is miniaturized and sent inside of Mr. Burn’s body. Maggie is found, but there is not enough power to get everyone and the submarine out of the body, someone must stay behind, & that person is (drumroll) Homer (again). Everyone else makes it out & Frink announces that there is still a chance to save Homer. Unfortunately, he returns to normal size inside the skin of Mr. Burn’s. Then, everyone from all three segments of the episode start dancing.