Five college friends—Dana, Curt, Jules, Marty, and Holden—head out for a weekend getaway at a remote cabin in the forest. They are unaware that their every action is under surveillance by a mysterious high-tech operations center. As the group settles in, they discover odd artifacts and ancient relics within the cabin, signaling that this is no ordinary vacation spot. Once they unwittingly unleash a horror beyond their understanding by reading from an old book, the friends must contend with a series of bizarre and terrifying events.

Behind the scenes, technicians in the secret facility manipulate the environment and behavior of the group, guiding them toward a dark and ritualistic purpose. The friends struggle to stay alive as they face increasingly gruesome and supernatural threats. As some start to question the inexplicable occurrences, they must fight not only for their survival but also to uncover the truth about why they are being subjected to this diabolical game.