A pregnant couple, Jack (Rob Corddry) and Vanessa (Leslie Bibb), were forced to move from their original city to a small town in New Orleans due to life pressures, and accidentally moved into the most haunted house in the town. Jack and his wife were very happy when they first moved into the house, and even planned a beautiful life in the future, but this joy did not last long and was destroyed by the strange neighbor F'resnel (Keegan-Michael Key). They also saw the devil in the house later, and began to seek the help of the Vatican's elite exorcist team, hoping to get rid of the devil.