Peter Roman is a police officer on what should be a typical disturbance call. He encounters a teenage girl who is anything but typical. Her level of strength and violence surpasses some of the strongest suspects he's encountered. Father Pierce is a hospital chaplain who despite his lack of belief in the supernatural, is forced to stare down the pure evil within the girl. Father Dietrich Harlan is a seasoned priest and Vatican trained Exorcist who gets called in to save the young woman and restore order to the hospital. In one night, these men will come face to face with a demon who reveals to them their own demons. How can a group of flawed individuals defeat a being so powerful? Only by defeating their own monsters will they survive the night.