For Kim (Dominique Swain) it was supposed to be the perfect reunion and weekend getaway. She and her best friends drive to a remote lakeside cabin to reminisce about their college days. When the group decides to play the ghoulish game "Dead Mary" they mistakenly unleash a vengeful spirit that possesses them one by one. As the demon forces them to turn on one another, each is faced with a choice. Would you hack your best friend to pieces to ensure your own survival? Well...would you?