Marcus suffers from a rare sleep disorder called parasomia, which causes him to do things at night while sleeping and not being able to remember a single event the next day. One time he wakes up and finds himself half naked in the middle of a cemetary. The worse was about to happen when he wakes up with a knife at his side, himself covered with blood. The next thing he discovers was that his best friend's wife was found death from stabbing. Having a dark secret with her, he becomes terrified at the thought that he might have done the killing while he was asleep. Then again, Marcus believes there's another one involved, and that he was just being framed.

In My Sleep movie trailer HD

The more he tries to know about his own nocturnal activities, the more shocking it becomes as the real truths start coming out.