A well-to-do family lives a lovely, carefree life until 13-year-old Cora starts to get violent nightmares which lands her in the hospital. Top-rated radiologist, Nina Evanko, reviews Cora's files and suggests she stays with the family over a few nights to watch Cora as she sleeps. Nina soon realizes that there is something more mysterious, more vile in Cora’s behavior than what science can explain. She turns to a Priest to conduct an exorcism but has the evil inside Cora become too strong?

Eight strangers wake up in a bizarre cube with no recollection of how they got there and no idea of how to get out. They soon discover that they're in a deadly dimension where the laws of physics don't apply and they must unravel the secrets of the "hypercube" in order to survive.