Mr Ma and his son Ma Wei run an antiques shop nestled in a quiet street by St Paul's Cathedral in London, where, far from their native Peking, they struggle to navigate the bustling pavements and myriad social conventions of 1920s English society. From their well-meaning landlady Mrs Wedderburn and her carefree daughter Mary, to the old China hands the Reverend Ely and his formidable wife, the Mas encounter all sorts in this story of unexpected love, crossed wires and antipathy.