Father James (Brendan Gleeson) is a good priest who is faced with sinister and troubling circumstances brought about by a mysterious member of his parish. Although he continues to comfort his own fragile daughter (Kelly Reilly) and reach out to help members of his church with their various scurrilous – and often comic – moral problems, he feels sinister and troubling forces closing in, and begins to wonder if he will have the courage to face his own personal Calvary. John Michael McDonagh’s brilliantly layered, darkly comedic drama offers a more philosophical reflection on faith, rooted in the biblical story of Calvary’s two thieves—one redeemed, one damned.