After a comprehensive police crackdown, anti-narcotics officer Yang Yipeng (played by Wang Yang) used the chief criminal Mou Haidong, who was still resisting after being arrested, as a breakthrough. With the assistance of rookie police officer Zhi'an (played by Tang Enxi) and informant Dozai (played by Zhang Youhao)), following the clues about the source of new drug production by Mou Sen (played by Yu Haoming), drug sales chains in Xiangjiang, Southern Hunan, Yunnan and Sichuan and other places were discovered one after another. In the end, the real operator seemed to have not yet revealed his true face in Lushan...…