Based on a true story, a young couple finally buys their dream house in an upwardly mobile suburb of New Orleans. Unfortunately, they have outbid Madison, the mother of a special-needs daughter, who believes the home to be the answer to her family's troubles. Now, Madison obsessively torments the couple, trying to force them out. As the frightening ordeals only get worse, the couple must find a way to protect themselves and their new home.