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.

A bachelor who decides to propose to his girlfriend with his mother’s ring only to have the ring accidentally knocked into the gutter by a boy. He experiences the crazy nightlife in Taipei and meets many interesting individuals throughout his mission to get the ring back.