In a highly secured vault deep within the walls of Vatican City, the Catholic Church holds thousands of old films and video footage documenting exorcisms/supposed exorcisms and other unexplained religious phenomena they feel the world is not ready to see. This is the first tape - Case 83-G - stolen from these archives and exposed to the public by an anonymous source. A priest and two Vatican exorcists must do battle with an ancient satanic force to save the soul of a young woman.