On a wind-carved coast where the sea answers truth with silver light, two women are bound by an ancient oath older than prayer. Nerissa, a tidewise fisher with salt in her blood, and Ianthe, a former temple scholar fleeing sacred control, discover that the magic linking their wrists does not command obedience—it demands honesty. As forgotten altars rise from the deep and desire sharpens into devotion, they must choose whether their bond is fate… or something far more powerful.