Unaware that a serial killer is stalking clerks at 24-hour convenience stores, Debra reluctantly takes the night shift at her minimum-wage gas station job after her co-worker disappears. What begins as routine shelf-stocking and floor-sweeping quickly spirals into a heart-pounding descent into paranoia, dread, and blood-soaked madness as the killer closes in.

After five years in a coma following a fatal car accident, Madison Neubauer wakes to find her home and family in the grip of 'The Observance', a religious cult who will stop at nothing to protect their secrets.