In 1953, the dark alleyways of Soho, London, teem with crooks, fortunetellers, cardsharks, and ladies of the night. But even the toughest racketeer has a soft spot for Rosie, the adopted daughter of the whole neighborhood and resident ray of sunshine in the local cafe. A doorstop orphan, her world is filled with a menagerie of neighbors come to nosh and gossip. But as her Uncle Bert and pillowy-plump Aunt Maggie work to make Rosie's adoption legal, she learns that the woman she has always known as "The Perfumed Lady" is not only a professional tart, she's also a gin addict and Rosie's mum.