Fifty years ago, Father Leo Bonaventura, a young exorcist, cast a demon out from a young boy in Central America. The demon, Asmodeus, vowed revenge. Now the demon has returned, in the same town where Bonaventura is a retired priest nearing the end of his life. In a series of not-so-coincidental events, the possession of a young girl brings together an unlikely group of people, all of whom are linked in their pasts in some way: A group of paranormal investigators, including twin psychics. Robert Lockhart, a defrocked priest with a dark secret that only the twins know. A father whose dead wife was a college girlfriend of Robert's and once conjured an evil spirit with him through a Ouiji board. Now they must all join forces and help Father Bonaventura rid the town not only of Asmodeus, but also the plague of poltergeists that have followed the demon into our world.