Luke Bolton, a troubled college professor, kidnaps Abigail Davies, a brilliant psychologist, in order to assist a host of vengeful spirits extract their revenge upon their ex-therapist or risk being tormented by the angry ghosts forever. As Abigail fights for her life, Luke struggles with his sanity as the couple wage a psychological war, each battling to survive, as their battle plays out in the vast, desert wastelands of New Mexico.