In this year's blood-chilling blockbuster boo-fest, the Simpsons celebrate Halloween with three visions of terror. First, Springfield is destroyed by a band of angry, marauding billboard icons. The Lard Lad, Professor Peanut, and the Duff Cowboy escape their billboards and crush everything in sight until guest star Paul Anka saves the day with a catchy jingle. In the second segment, Groundskeeper Willie picks off the students of Springfield Elementary one-by-one. In a flashback, we learn that Willie was accidentally murdered by the kids' parents, and plans to kill the children in their dreams for revenge. It's up to Bart, Lisa, and a quick-thinking baby Maggie to fight him in dreamland. In the third segment, Homer steps into an alternate dimension, where he becomes a 3-D rendering. He finds that he's trapped in the digital world and all the attempts to save him by Professor Frink, Chief Wiggum and Ned Flanders are useless. Once again, it falls to Bart to save the day, but he fails when the digital universe implodes, sending Homer into an even scarier world: ours.