A jewelry shop owner hires Ting Kuo to rob his shop for in order to scan his insurance company, but when the heist fails, he tries to get rid of him. Jacky and Mary get involved in the case. When Mary is endangered, Jacky saves her and they catch Ting Kuo, who reveals the proprietor's plot. The proprietor, who is utterly discredited, searches for Jacky and Mary for revenge...