A late-night knock on the door of Father Randall leads him to a woman possessed by a malevolent spirit. Though he attempts to help, he realizes he is unprepared to battle the evil being. After fleeing the violent scene, Father Randall meets a seemingly ordinary young man named Daniel Floore, who offers his assistance. When the priest reluctantly agrees, he is shocked to witness Daniel speaking to the demonic creature in an unearthly language. Daniel successfully expels the spirit without calling on God, but disappears before Father Randall can question him, leaving the priest to ponder the young man's existence and his own faith.
Shortly thereafter, Daniel becomes acquainted with and transforms the lives of three young women-Kara, a young woman who relishes her youth; Jade, a girl in an abusive relationship who is seeking spiritual guidance; and Marianne, a woman with a violent history who is being hunted by a satanic cult.
As the mystery of Daniel Floore's identity is revealed, the fate of Father Randall, Kara, Jade, and Marianne become intertwined. Their connection leads them to a fierce showdown with forces that are evil beyond anything they could ever have imagined.