A playboy business tycoon, Liu Xuan, purchases the Green Gulf, a wildlife reserve, for a sea reclamation project, and uses sonar technology to get rid of the sea life in the area. Unknown to him, the Green Gulf is the home of merpeople, and the sonar has caused many of them to succumb to illness or die. Xuan's business ventures in the area are threatened when he crosses paths with the mermaid, Shan, who is sent to avenge her people.
The Mermaid is a 2016 romantic fantasy comedy film directed, co-written and produced by Stephen Chow, which stars Lin Yun, Deng Chao, Zhang Yuqi and Show Lo. A Chinese-Hong Kong co-production, the film tells the story of a playboy businessman who falls in love with a mermaid sent to assassinate him.