Five college students set out for a weekend getaway at a remote cabin in the woods. The group consists of Ash, his girlfriend Linda, his sister Cheryl, their friend Scott, and Scott's girlfriend Shelly. The cabin they've rented seems quaint and secluded, an ideal spot for some rest and relaxation. As they settle in, they discover strange artifacts and an old tape recorder in the basement. Unbeknownst to them, playing the recorder unleashes a dark and malevolent force.

The recorded incantations found on the tape are from The Book of the Dead, and when played, they inadvertently summon demonic entities that permeate the woods surrounding the cabin. The group's night turns to terror as they are confronted with unspeakable evil. One by one, they are possessed by the malevolent spirits, starting with Cheryl, who is lured into the woods and attacked. As the night progresses, the evil force seeks to claim them all, with Ash ultimately forced into a desperate fight for survival against his possessed friends.