When a Catholic youth ministry is invited to spend the night in a vacant Mexican church, they're suddenly trapped by the ghostly apparition of a vengeful nun. Now their only hope is to break the curse before she claims them all, one deadly sin at a time.

Recovered footage documents the horror of a group of teens who break into the abandoned Simmons House. What begins as a thrill-seeking adventure turns into a nightmare as they discover a dark cult intent on sacrificing them one by one.