Kristen thought a weekend at the lake with her friends was the perfect celebration after high school graduation. She promised herself she'd loosen up and enjoy what might be her last hurrah with her high school buddies before they all headed off to different colleges in the fall. When one of her friends is murdered, the group finds out they've been stranded in the woods with form of communication with civilization. All thoughts of the future vanish as Kristen and her friends fight for their lives against an unseen assailant, who seems hell bent on making sure they never leave.