Twenty seven years after she adopted her baby daughter in Ireland, Lena Molloy receives a mysterious call from Sister Monica, the nun who set up the adoption. She claims that she wants to merely tie up loose ends before she retires, but Lena feels both anxious and frightened after the call. Against her husband's wishes, and accompanied by her best friend, Alma -- who is nursing a broken heart -- Lena travels to the west of Ireland on a secret mission to trace the birth parents of her daughter, Mary, an up-and-coming star in the world of opera.