Leon Nader suffers from insomnia; as a child sleepwalker, he had violent episodes and had to turn to psychiatric treatment for his condition. As he grows up, these symptoms subside and he is virtually cured. One day, when his wife suddenly disappears from their apartment, Leon is worried that his old illness has resurfaced. Desperate for answers, Leon attaches a camera to his forehead to track his movements as he sleeps. When he finds a chilling discovery when he watches the video in the morning, Leon is forced to fight through what is reality and what is unconscious to save his family, and himself, before it is too late….