20 Years ago, the mermaid clan under the sea suffered great changes. King Li of the mermaid clan was killed by the human Queen Li. Queen Li tried to escape with Zhenhai Pearl but was also killed. And their only bloodline, the half-mermaid Yuehe, was also exiled to the human world. Twenty years have passed. Yue He has already adapted to the human world, but he is still alive. She had no one to care about, and she couldn't imagine establishing a long-term intimate relationship with anyone. She opened a pet shop, worked and lived a regular life, and returned to the sea regularly to recuperate. But she didn't expect that something would happen when she returned to the sea. Everyone thought she committed suicide by jumping off a cliff. . . She had no choice but to report to the police station and explain. She didn't want to arouse others' suspicion. The mermaid in the game world meets the kind-hearted police officer Wei Kong. Chance encounters and mutual attraction again and again drag the two into falling in love. But Yue He is afraid. How should different races compose a love? And what is the truth behind the accident on the seabed 20 years ago? And who is trying every possible means to get the Zhenhai Pearl?
Concept: A mermaid who was exiled to the world opened a pet shop, but met a kind police officer again and again. How to compose this love song that crosses races?