Rookie police officer Jessica Loren has been assigned the last shift at a closing police station and must wait for a hazmat crew to collect biomedical evidence. Ordered not to leave the station under any circumstances, Jessica comes to learn that it's more than just an outdated station, it's home to the ultimate embodiment of evil and his devoted bloodthirsty followers. Jessica is left to fend for herself in the Devil's playground.

Based on true events. Patrick and his wife Karen Connor are hired by the state to exhume bodies resting under a closed-down reform school, known for the sadistic torture and murder of young boys in the early 1900s. During this horrific excavation they are met with unnatural forces causing them to question their sanity and will to live.