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 point.With the help of Mou Sen (played by Yu Haoming), he followed the clues about the source of new drug production and discovered drug sales chains in Xiangjiang, Southern Hunan, Dianchuan and other places. In the end, the real operator seemed to have not revealed his true face in Lushan...