Irish maid Molly Riordan's mistress's indulgence with a masked American at a costume ball results in a pregnancy--and a fianc waiting in the American West. For Molly, accompanying Lady Elizabeth Summersby means the chance to find her own father, who fled across the ocean years ago. A routine stagecoach stop in Colorado turns into a major mishap when Elizabeth is kidnapped--and the man who finds Molly believes she's his bride-to-be.