When disgraced doctor Ethan Reed finds an unconscious girl on a storm-battered shore, he discovers she is Serena, a wounded mermaid with no memory and a royal secret. Hunted by Oceanus Labs, betrayed by sea rebels, and summoned by a mother she cannot remember, Serena must survive in the human world while Ethan risks everything to protect her. As forbidden love grows, her lost identity as Atlara’s princess awakens, pulling them into a war between land and sea. To save both worlds, Serena must choose not where she belongs, but who she truly wants to become before time runs out.
