The end is here. After a raging inferno destroys their home, Theresa and her fellow survivors are left to pick up the pieces. Destitute, distraught, and reeling from the loss of their comrades, they decide to join a small community at a local hospital. Safety is an illusion. At first, all seems well, but behind barricaded stairwells, chained-up doors, and suspicious eyes, they soon realize the hospital holds deadly secrets...