Abandoned at the gates of a London park one winter's night in 1850, baby Lily Mortimer is saved by a young police constable and taken to the London Foundling Hospital. Lily is fostered by an affectionate farming family in rural Suffolk, enjoying a brief childhood idyll before she is returned to the Hospital, where she is punished for her rebellious spirit. Released into the harsh world of Victorian London, Lily becomes a favoured employee at Belle Prettywood's Wig Emporium, but all the while she is hiding a dreadful secret...