Lin Feng, a veteran of Jiaolong Special War, changed his job and went undercover on the border of Yunnan, sneaking into a poisonous cave to face the dark jungle. Ma Chai tore apart the black net layer by layer from the bottom to reveal the top protective umbrella of the "boss". He used his body as a blade to uproot transnational drug lords and political and legal worms in the deadlock between red and black, paying tribute to the unknown anti-drug hero.