The Gulf of Mexico, 1702: When pirates of the square-rigger Original Sin steal ashore to abduct a doctor to tend to their wounded, they end up settling for the doctor's attractive fiancée—Celia Pierce, the town seamstress.

Together with Gayle Malvern, daughter of wounded pirate captain "Madman" Malvern, Celia becomes a reluctant participant in an unexpectedly thrilling journey through the Caribbean. For Gayle, Celia's presence is at first a welcome and shapely distraction, but as her attraction to the seamstress deepens, she realizes that Celia comes to mean more to her than is almost cerntainly prudent. As Celia and Gayle navigate the perilous territories of gypsies, prostitutes, mercenaries, and slave-traders, they forge a partnership born of necessity that Gayle soon hopes will veer away from insurmountable danger—and instead detour directly to her bed.