In the opening act, Kang and Kodos are watching a baseball game, eagerly awaiting The Simpsons, when they decide to fast-forward time, they accidentally cause a suction, causing the whole universe to implode.
In "B.I : Bartifical Intelligence", Bart accidentally falls out the window and Selma and Patties apartment, causing him to be placed in a coma. When he reawakens, he finds he has been replaced by a robot. When Homer ditches him in the woods, Bart finds a society of robots. During the middle of the night, he steals their parts. When he returns home, he kills his replacement, and bisects Homer, he gets his place back in the family.
In "Survival of the Fattest", Homer and some of the other men of Springfield are invited to Mr. Burn's mansion for a good old fashion hunting trip. But, they soon find out, they will be the hunted. They all make a run for the woods, one by one, the men fall. When Homer seeks refuge in a tree, he accidentally falls out of the tree, he purples the men out of the tree, killing them on impact, except Moe, who survives the fall, only to be crushed to death by Chief Wiggum. Homer makes it until morning, where Smither's and Burn's catch up with him, only to be subdued of Marge and her frying pan.
Finally, in "I've Grown a Costume on Your Face", the people of Springfield are cursed to transform in their costumes, some like it, some want their normal lives back, but when Maggie turns out to be a witch, she turns everyone into pacifiers.
The episode was hilarious, I especially liked "Survival of the Fastest", I give the episode a 10/10!