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Penghai City Public Security Bureau detected that the city is hiding two drug lords "Playboy" and Wu Hongkai. In order to eliminate them, director Chen Wentao set up a task force responsible to solve the case. The police officer Gao Zhiyuan is grief-stricken by the unexpected death of his fiancée. Chen asked Gao Zhiyuan to secretly join the task force and asked him to go undercover to collect evidence for Wu Hongkai's company on the pretext of avenging his fiancée, Ai Li. With his natural vigilance and extraordinary qualities, Gao Zhiyuan, under the leadership of Director Chen and with the cooperation of all the police officers in the city bureau, overcame many difficulties to find out the truth and solve the mystery, and justice prevailed over evil. Gao Zhiyuan completed the difficult task assigned to him by the organization, and also brought light to his fiancée Ai Li who was killed innocently....

This film is based on a true story of the Ministry of Public Security's supervision of the 516 Sichuan major drug manufacturing and trafficking case. On a national highway in Dachuan City, the squad leader of the anti-drug team, Cao Renfan, leads his team in a fierce gunfight with desperate drug traffickers who have hijacked a bus, rescuing hostages and arresting the drug manufacturer Peng Jiahao. The anti-drug team conducts in-depth investigation and analysis, destroying the conspiracy meticulously planned by the behind-the-scenes drug lord to find out the police undercover, and using Peng Jiahao as bait to capture the Southeast Asian drug raw material kingpin "Brother Qiao." The drug den rooted in Liujia Mountain is exposed, and the anti-drug special task force, along with nearly a hundred special police officers, engage in a desperate battle with the extremely vicious drug manufacturing and trafficking gang, vowing to destroy this large criminal organization....

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