Tree House of Horror XVI.It is game six of the World Series and Kang and Kodos decide to speed up the play of the game and they fire the acceleray. They shatter the fabric of the universe and everything is destroyed. a). "B.I.: Bartificial Intelligence" Bart falls into a deep coma from which he will never emerge. Well Bart does wakes from his coma only to find that his family has replaced him with David, a newly developed artificial robot son. Bart struggles to fit back in with his family and Homer and Marge decide they must get rid of one of their sons. They abandoned Bart, but harvesting parts from some abandoned robots he gets his revenge. The robot nightmare only turns out to be a dream when it is revealed that Homer has actually been possessed by the devil. b). "Survival of the Fattest" Homer and others are invited by Mr. Burns to his estate for “A Most Dangerous Game.” It turns out that they are participants on “The World Series of Manslaughter” featuring guest analyst Terry Bradshaw where they are the quarry and Mr. Burns is their hunter. Surprisingly Homer is the last contestant left standing, but it takes Marge’s intervention to even the score. c). "I’ve Grown a Costume on Your Face" It’s the Springfield Semi-Annual Halloween Party but the costume contest goes awry when a real hideous witch turns everyone into real-life versions of their costumes. Lisa, as Einstein, searches for a solution to their problem; but it is up to Maggie, who was dressed as a witch, as the only one with the power to reverse the spell.