When her mother leaves Liverpool for a new life in Cardiff, Rita Taylor has to go and live with her aunt. Grudgingly, Margaret Sinclair agrees to look after her and the pair soon become firm friends, especially when Rita re-introduces Margaret to her long lost sweetheart William Brodie. As Rita's relationship with the Brodie brothers flourishes and secrets from Margaret's past emerge, both women must make a dramatic change of heart if they are to avoid making the same mistakes all over again.