Rome, 1953. David is young, handsome, charismatic and sworn to celibacy. He is freshly ordained, and about to return to England to begin life as a priest.

Devotion to God is all he's ever known.

In London, Margaret is entangled in an impossible love affair. Committed to living on her own terms without sacrificing her faith, she becomes drawn to a women's movement challenging the archaic rules of the Church.

When their lives are thrown together at a Catholic college in a quiet village, an undeniable connection forms between them. And so begins a story of forbidden love, sacrifice and secrets, with consequences that will reverberate across the generations.