Shih-Nan is assigned to a top-secret mission to protect a Communist Party official in Hong Kong. The official is in Hong Kong to see his first love, but Taiwanese bad guys catch wind of the visit and plot an assassination. It’s up to Shih-Nan to save the day with help from a Taiwanese policeman named Yung, who just so happens to fancy Shih-Nan!

In this third sequel, Mainland cop and perennial straight-woman Cheng decides on a civilian life in Hong Kong, but her immigration quickly proves comical.