When his child is possessed by an unrelenting evil, a father hires three expert exorcists to purge the demon and save his family. But this demon is merely the gatekeeper to a true hellion that will be unleashed on earth if the trio of exorcists fail.

A girl’s home for wayward teens is overrun with viral possessions and Dr. Olivia Beckett is called in to help, only to recognize the work of the devil. She assembles a new team of exorcists to save the four possessed young ladies, only to discover that one of them may be possessed by an old ally, Father Ryland.