London, 1871: Lucie Dumas of Lyon has accepted a stipend from her former lover and his wife, on condition that she never returns to France; she will never see her young son again. As the money proves inadequate, Lucie turns to prostitution to live, joining the ranks of countless girls from continental Europe who'd come to London in the hope of work in domestic service. Escaping a Covent Garden brothel for a Magdalen penitentiary, Lucie finds only another form of incarceration and thus descends to the streets, where she is picked up by the author Samuel Butler, who sets her up in her own establishment and visits her once a week for the next two decades. But for many years she does not even know his name. Based on true events.