Isabelle Wareham, whilst caring for her beloved widowed father, has not seen much of the world. After his death, Isabelle finds she is no longer her own mistress but under the guardianship of her unscrupulous brother-in-law, Lord Dunsfold, who sees her as a way to improve his own fortunes. The outlook is bleak until events throw Isabelle and the impoverished former soldier Lord Idsworth together. However, Dunsfold is determined to force her into a more lucrative match and Isabelle will need to rise above her circumstances to grasp her chance of happiness.