On the 20th anniversary of the brutal Christmas Eve murders at St. Agnes Church, a demonic preacher from the past returns to haunt the residents of the same town. Among them is Salem, a young man whose once happy life is torn apart by an unspeakable crime. The only one who believes in her innocence is a heartbroken girl (Alexis Knapp) who is having her own nightmares. Together and apart, they must face their own demons as well as a real demon named Mr. Monday.