Lizzie Legard was just a teenager when her older sister disappeared without a trace from her job on a Key West beach, a tragedy none of her family has gotten over. Home from college for the summer, Lizzie jumps at the chance to take her boyfriend's place on the dive crew when he's injured working with his family's treasure salvage business. The wreck might be a lost Spanish galleon rumored to hold untold treasures, and a curse. For Lizzie, the biggest curse is the forced proximity of partnering with her boyfriend's older brother, Damen Wisler.

Damen is no stranger. He'd been part of the search team when Lizzie's sister disappeared. Damen is the family black sheep. He's not interested in taking over the family business and he really shouldn't be interested in his little brother's girl. Home on an extended and long-overdue leave, he's focused on his career in the Navy as a SEAL operator. Lizzie's wealthy family would never approve of their relationship and he's not about to let his newfound attraction to her distract him from his dreams.

But when new evidence is uncovered regarding Lizzie's sister, the clues point to a murderer in their midst. Then tragedy strikes again, threatening Lizzie and Damen's fragile new relationship. Do they have a chance at a future together? Meanwhile, far out at sea, a deadly hurricane is brewing...