In the debt-ridden island of Ithara, Kallista Akris, a young woman forced to wear a bronze mask due to a superstitious curse, must forge a dangerous marriage covenant with the feared sea-lord Leandros Kyros to escape her abusive family. As her desperate father secretly sells her to a ruthless ship broker to clear his debts, Kallista must navigate treacherous household politics, blackmail, and assassination plots to secure her freedom before she is traded away as a monstrous possession.