When an old nun kidnaps Pia, a six-year-old child, from an orphanage near Siena, Sister Daniela, temporarily teaching at the orphanage, knows the searchers need help. She calls old friend Sister Angela and asks her to investigate. But the probe into a motive becomes complicated by the fact that, years earlier, the toddler had been left on the doorstep of a convent. No one knows where she came from. Surrounded by vineyards in Tuscany's Chianti Classico region, the village of Filari becomes the focus. The search, however, extends into the hill villages of eastern Tuscany where four years earlier a relationship linked a thriving vineyard and two murders. Love and greed bring the sleuths, Sister Angela and Sister Daniela, together again to find Pia and solve the mystery of her past.