Lady Elizabeth of Tophsam, Prioress of St. Mary's, is struggling to maintain her community. Opposition comes from Sister Margherita, treasurer, who has accused her of lascivious disregard. Claiming that money, needed for essential repairs, has been given to the new vicar - a man Lady Elizabeth often sees alone at night. The community of Belstone, situated on a bleak and miserable moor, is being torn apart by rumours and rivalries.