She changed her name. Her face. Her life. Living in the small town of Summer Glen, California, Keri Tate (Jamie Lee Curtis) runs the prestigious Hillcrest Academy. But Keri Tate is hiding a secret. Underneath the headmistress is Laurie Strode, the sister of dreaded killer Michael Myers. Having faked her death in a car crash, she went into hiding with her son John (Josh Hartnett). But it's October 31st again.

In Illinois, Marion (Loomis' nurse from the original film) finds files related to Laurie Strode stolen - by the Shape! Making his way cross country, Myers tracks his sister to Summer Glen. There, Keri isn't dealing with the anniversary well. She's an alcoholic who can't even be helped by her lover/school counselor Will (Adam Arkin). She knows her brother waited 15 years to come after her before. Why not another 20?

Her son John, his girlfriend Molly, and their friends Charlie and Sarah decide to throw their own private Halloween party while the rest of the school heads off on a field trip.

The only other person on campus is Ronnie, the security guard, unaware that The Shape has tracked down his sister, and is ready to carve up more than pumpkins.

As Laurie discovers that her demon from the past is back, she decides it's now or never. In a bold move, she locks herself into the school, ready for a battle to the death between her and Michael.

A pounding finale will leave your heart beating as Laurie Strode takes her revenge in the most ambitious HALLOWEEN film yet.