It's been a decade since Michael Myers had his last killing spree in Haddonfield. But tonight, October 31st, 1988, that's going to change - it's Halloween again!

While being transferred from the Ridgemont Maximum Security Hospital, Michael Myers, who's been sleeping dormant in a coma for the last ten years, awakens when he hears that he has a neice. Meanwhile, back in Haddonfield, Myers' niece Jamie Lloyd (daughter of [supposedly] deceased Laurie Strode) is having nightmares about her evil uncle. Her step-sister, Rachel Corruthers, takes her out trick-or-treating, but instead of finding a night of fun, they find Michael Myers!

But Dr. Loomis also survived the explosion of the second film. He tracks Michael back home, enlisting the help of Sheriff Ben Meeker. Together, they shelter Jamie in Meeker's not-too-safe house. Myers makes his way in, taking his revenge on victims Kelly, Deputy Logan, and Brady. Jamie escapes to the local schoolhouse, but her fiendish uncle is hot on her track. A high-paced finale leaves Myers buried in hell. As everyone begins to calm down from the night, a scream is heard from the upstairs of the Corruthers' house - the evil has only started!