An internal fight broke out between criminal gangs in Shahai Xiju, and Song Yuanfeng and his partner Wang Xun happened to encounter the suspect on the spot while handling the case, thus opening the prelude to the investigation of the "Haichen 5.28 case". Song Yuanfeng was transferred to the special case team with Wang Xun because he had direct contact with the suspect. In this anti-drug eradication war, he was under pressure from his father's reprimand and teammates' ridicule for the arrested suspect "Ding Datou" who escaped from handcuffs. He started a life-and-death game with the suspect Zhao Gang and the gang leader Feng Jun who were tracking him. Feng Jun's drug trafficking gang in Haichen was finally wiped out, and Song Yuanfeng understood his father's good intentions as he grew up.