Following her father's sudden death, Casper Delmar is forced to continue his lifework. She must set out on a journey across the seas with nothing but her father's old journal. Yet when no ship is willing to take her, she turns to the one ship known to be accepting of women aboard: The Cold Maris, a ship infamous for pillaging, plundering, and spiriting away young women. Casper is thrown into a world of blood-thirsty pirates, forgotten secrets, and hidden treasures beneath the waves.