A single mom named Gabbie and her 9-year-old son, who are looking to start a new life, move into a strangely affordable mansion in New Orleans, only to discover that the place is much more than they bargained for. Desperate for help, they contact a priest, who, in turn, enlists the aid of a widowed scientist-turned-failed-paranormal expert, a French Quarter psychic, and a crotchety historian to help exorcise the mansion.