In the heart of the ocean, a fisherman's simple life is upended by an encounter with the Immortal Light, leading to a revelation that intertwines his destiny with the ancient legends of the sea....

When the last mermaid, Elara, is tricked into entering a labyrinth of echoes by her own kin, she must navigate its treacherous depths to uncover a truth that could determine her fate and the fate of the ocean itself....