1835, England. A married woman, pregnant with her sea-captain lover's child, dies giving birth. The child, Serafina Finn, is abandoned to an orphanage and grows up longing to feel that she belongs somewhere. Eighteen years later, her father, hearing rumours that his lost daughter survived, dispatches a detective, Adam Chapman, to discover the truth. Adam finds, and falls in love with, Serafina - but, even if he can prove her identity, will her real family accept her?