Gwyneth Beddows, a young woman of nineteenth-century England, has often felt lonely and unloved by her father, who believes the rumors that his pretty daughter might not actually be his child. The one place the young woman can find consolation is in the saddle of her spirited stallion. The magnificent horse shows promise as a racehorse and has drawn the attention of Irish horse master Cormac D'Arcy, who is visiting England on business. The handsome young man also brings a lifechanging message from Gwyneth's grandmother-- a frail yet feisty Irish woman Gwyneth has never met. Events orchestrated by her father force Gwyneth to flee England, and with the help of D'Arcy, she arrives at Shannonderry, her maternal family's ancestral home, where Gwyneth learns of a legend that will have a profound impact on her life and the lives of those around her. Touched by the promise of destiny, Gwyneth seeks to save the family estate from certain ruin. But with fierce rivals on the scene and her embittered father in the periphery, Gwyneth faces grave danger that may place her far beyond the reach of D'Arcy's rescuing hand-- and she must call on the strength of her heart if the historic legend of Shannonderry will ever be fulfilled.