Fetherhoughton is a dreary town in 1950s northern England. Father Angwin has lost his faith. Sister Philomena strains against convent life. The inhabitants of the town go about their lives in a haze. Then a stranger appears, bringing with him the hint of something new. But who is Fludd? An angel come to shake the dwellers from their stupor, or is he the devil himself, a wanderer of the darkest places in the human heart?