Iron Police Dog

In the southwest border, drug trafficking activities are rampant. Drug lords Ruan Xia, Xiao Jin, Thom and other leaders cover the sky with their hands. In order to open up the passage from Three Trees to Hong Kong via Kunming and steal the latest technical information from biologist Professor Chen Baitao, Ruan Xia, Xiao Jin and Thom sent Li Xin to sneak back to the mainland. After Li Xin returned, he pretended to have a relationship with Chen Sisi, the daughter of Professor Chen. After being discovered by sneaking into Professor Chen's study, he once again arranged for his accomplice Liu Hong to enter Professor Chen's home as a nanny. After Li Xin stole the information, he unexpectedly attracted pressure from the police and a series of gang pursuits...