After protesting the construction of a stamp museum scheduled to be built on their neighboring lot, the Simpsons are dismayed when they discover that what they thought was a successful relocation of the museum to a cemetery lot turns into a creepy nightmare when that cemetery moves next door. When Lisa's sleepless nights become too much for Homer and Marge, they turn to a psychiatrist for advice. Meanwhile, Lisa chooses to face her fears dead-on by visiting the cemetery alone late one night.

It's time for all-new tricks and devilish treats on THE SIMPSONS annual Halloween trilogy, -Treehouse Of Horror XVI.- The fright-fest begins in - B.I.: Bartificial Intelligence - when the Simpsons adopt David, a newly developed artificial robot son, to replace Bart after he falls into a coma. In - Survival of the Fattest,- Mr. Burns invites Homer and his friends to his gigantic estate for a hunting tournament, but Homer and the gang learn they are the ones being the hunted on -The World Series Of Manhunter- hosted by Bradshaw. In the final Halloween scare, -I've Grown a Costume on Your Face,- a costume contest goes awry when a real witch turns all the Springfieldians into real-life versions of their costumes, leaving Maggie dressed like a witch with the only real power to reverse the spell.