Three happy couples enjoy Thanksgiving in a cozy secluded cabin in the woods when they are suddenly interrupted by an unprecedented event that will forever change their lives. A stranger comes at the door, he is sever... more »ely wounded and when they let him in, he throws up blood into's Tess' mouth, he then collapses on the floor and while specifically pointing at one of the friends, screams his last words before he dies: Never Open The Door. The group of friends dumbfounded start to panic. Tess inexplicably disappears. A killer is on the loose.« less