A family moved to an old farm house in Rhode Island with their six daughters. Later on they begin to experience small paranormal activities. They began hearing strange noises and then things start to move and fall by themselves. As time passes, things start getting more and more extreme. The girls begin to see people in the house and the mom is being harmed by a evil spirit. The spirit plans to make her weak in order to be able to poses her. After meeting Lorraine and Ed Warren, who are famous paranormal investigators, the family asks them to go investigate their house because they believe the house is being haunted by something evil.
After investigating the house, Lorraine and Ed find out that the house is being possessed by an evil spirit or demon. They figured out that a witch that lived there had sacrificed her baby to satan. The witch kept possessing other moms that moved into the house and made them kill their own children. Lorraine and Ed take their friend Brad and Drew in to the house to help them gather evidence so the Church could see that the house is in need of an exorcism and to be able to save the family from the evil demon.