Lin Kai was transferred to Jiangcheng City to partner with Wang Xiaoshu and Cheng Nan to carry out anti-drug work, a batch of drug raw materials were accidentally leaked, Lin Kai and others investigated the drug factory layer by layer, and at the same time, Mr. Big, a drug lord, helped the police all the way to get clues, and wanted to use the police to eliminate the rival Taige. thought that this plan was seamless, but Lin Kai and others still saw the flaws, and after capturing the Taige gang in one fell swoop, Mr. Big was quickly arrested.