The Legend of Mermaid

In the Ming Dynasty, Gao Dehai and Yan Lie the leaders of The Imperial Guards lead their fleet to travel secretly in the East China Sea. They met storm, flood, and dragon attack, but get rescued by mermaid Xiyin. They accidentally hit the dreamlike Fairy Island. While Gao Dehai gets lost in the treasures of the island, Yan Lie and innocent Xiyin start to like each other.