Synopsis：A new type of drug appeared in Hong Kong, leading to an armed drug smuggling case two years ago, and the clues pointed to the Hongtu Group. After the transformation, Lu Yunlong was ordered to investigate undercover and saved the group's chairman Li Hong to gain his trust. He found out that the second-in-command Chen Biao was the murderer who killed his teammates in the past. He joined hands with undercover Xu Li, experienced a life-and-death battle with drug dealers, and finally successfully destroyed the drug trafficking group.