Lady Mercy James takes adventure to new heights when she sets out to prove to her bitter grandmother a man can want her. However, her passionate one-night encounter with a handsome sea captain leaves her aching for love, and pregnant.

English lord Ashton Sinclair masquerades as rogue pirate, Captain Sin—a man who only wants a woman to warm his bed, not his heart. Yet after meeting Mercy, his emotions begin to melt the hardness of his resolve. While her beauty stimulates his lust, her generous spirit arouses long buried sentiments of love, which he abandons by returning to the sea.

Nevertheless, fate brings them together again. Threatened by the return of his overwhelming fear of commitment, he denies himself the joy of the lady's affections and doesn't appreciate how much he can miss a woman, until he makes a grave error in judgment by trading the love of his life for an island paradise.