In 1963, a young woman was possessed by a demon claiming to be the Devil, and the woman's mother requested the local priest to perform an Exorcism. No one knows what became of them. 50 years later, a group of filmmakers attempt to recreate the Exorcism but they are not prepared for the horror they will encounter. Captured on behind-the-scenes camera are the disturbing and unexplained events leading to the film crew's final hour.