Young Miles Cavanagh becomes the improbable guardian to Felicity Monahan, a wealthy head-strong heiress who is only a few years younger than he. Felicity at first seems set on marrying Rupert Dunmsore, an unscrupulous cad, who clearly only wants to wed her for one reason--and that reason is not love. Dunsmore lusts after Felicity and her fortune, but Miles is determined to stop the match. As he and Felicity begin to have feelings for one another, their love must withstand the test of Dunsmore's fury.