Reborn to escape the murder that ended her previous life, the daughter of a god forges a sacred bond with the Sea God, who hides his identity and lives as an ordinary fisherman. Driven by envy, two rivals repeatedly scheme against her, while the ruler of the Underworld pulls strings from the shadows. In order to save her, the Sea God is trapped inside a seal. Awakening her own true divine power, she journeys down to the Underworld to rescue him. Together they defeat all enemies, hold a magnificent divine wedding witnessed by the other gods, and rule two realms as partners.