In a small town people get used to go to a Sunday service that performed by young father Marcus. This is him who the mother of two children call when something bad is going on with her daughter. Katherine recently is back from college and is changed unrecognizable. It may seem, at first sight, she has an ordinary depression or it is a puberty. But her mother dos not believe in it. She is sure that unexplained things are going on in the house and the proof is the voices that sound from inside the walls.