在这部梦魔缠身惊悚/恐怖片中,一个年轻的女人必须通过一场由睡眠瘫痪的现实现象来拯救她自己和她的朋友，从一个古老的罪恶中拯救受害者。
Kate Bowman (Jocelin Donahue) is an average social worker who is investigating in the mysterious deaths of people who died in their sleep. Shortly before their deaths, the victims all reported a supernatural force that appeared to them while they were suffering from sleep-paralysis. When Kate investigates further into the case, she opens herself up to the creature's wrath, and soon finds herself, and her family suffering from an ancient evil.
