Jack is the lone survivor of a campsite slaughter of a handful of college students. Left with a concussive brain injury, he can't remember what happened that night. After convalescing, he is released to the care of his parents only to be interrogated by police as soon as he's able to speak again. His girlfriend was one of the murdered and now they suspect him of being the culprit...He begins doubting his own innocence and sanity, when he begins to have flashback dreams of his friends being attacked by a werewolf.