BARTIFICIAL INTELLIGENCE - Bart ends up in a coma after attempting to jump from the roof to the swimming pool at Spinster Arms Apartments. In an effort to cope with the loss of their boy, the family takes in a robotic boy who quickly proves to be a better son. Bart awakes to discover the family wants to keep both sons. After repeatedly being shown up by the robotic boy, Bart is abandoned on the side of the road by Homer. Bart stumbles across a friendly band of discarded robots and harvests their parts to turn himself into a cyborg. While enacting his revenge, Bart accidentally cuts Homer in half and he too becomes a cyborg.SURVIVAL OF THE FATTEST- While attending a hunting party at Burns Manor, Homer panics and believes the prey is the hunting party. Mr. Burns thinks this is much better than the planned grizzly hunt and orders the chase. After bringing bad luck to anyone he has contact with, Homer finds himself alone and running for his life. Marge witnesses the game on television and arrives in time to knockout Burns and Smithers just as they are set to execute Homer.I'VE GROWN A COSTUME ON YOUR FACE - After losing a Halloween costume contest to Dr. Hibbert as Dracula, a real witch puts a spell on the people of Springfield causing them to take the form of their costumes. Lisa deducts that Maggie in her witch costume can reverse the spell; however, the residents with favorable costumes want to stay as they are. Maggie splits the difference by turning everyone into giant pacifiers.