When his daughter and her friend show signs of demonic possession, it unleashes a chain of events that forces single father, Victor Fielding, to confront the nadir of evil. Terrified and desperate, he seeks out the only person alive who's witnessed anything like it before.
12-year-old Regan MacNeil begins to adapt an explicit new personality as strange events befall the local area of Georgetown. Her mother becomes torn between science and superstition in a desperate bid to save her daughter, and ultimately turns to her last hope: Father Damien Karras, a troubled priest who is struggling with his own faith.
