Max receives a phone call from his sister asking for help. She hasn't spoken to anybody for nearly a month, since her husband Josh committed suicide. Her son Danny is still in shock and has stopped speaking. She asks Max to look after her home and two cats while she goes out of town to take her son to a specialist. Max accepts for his nephew's sake . What for Max should be a peaceful vacation, soon transforms into a terrifying nightmare. After his discovery of a series of demonic child drawings and his encounter with a young girl's apparition and a demon creature, he realizes that the house's tragic events are being caused by an ancient demon evoked by its first inhabitant: an old witch devoted to Satan.