A transnational drug-trafficking syndicate based overseas has colluded with local criminals in Dongshan to produce crystal meth on a massive scale in underground labs, with the aim of selling it in large quantities to China's inland provinces and overseas for huge profits. In this complex and dangerous environment, anti-drug police officers represented by Li Fei risk their lives to tear open the vast underground drug network woven by local dealers and their protectors. They break through layer upon layer of confusion and clear the way for the successful launch of the Thunderclap Anti-Drug Campaign.
