The story takes place in Country A, where the male protagonist, Zhao Jian, leads his Black Wolf Squad to escort goods for General Chachai of Country A. On the way, they encounter an ambush by guerrillas. Zhao Jian captures the female guerrilla leader, Zhang Ling, and learns that the Black Wolf Squad is not transporting humanitarian goods but materials for human experimentation. General Chachai, driven by personal greed, is conducting experiments on humans. Zhang Ling requests the Black Wolf Squad's help but is refused. On their way back, the Black Wolf Squad discovers the gruesome aftermath of the human experiments in the forest. Unable to bear the pain in his heart, Zhao Jian quits the Black Wolf Squad and decides to join Zhang Ling and fight against Chachai. His teammates unanimously support the decision and join him in a mission to take down Chachai's organization, seeking justice for the innocent souls who died.
Brother Shan, the undercover in the Major Crime Unit in West Kowloon sent a tip to Sir Wei, the senior inspector saying that the biggest drug trafficker in Hong Kong, “Mr. Jin” would deal the largest amount of drugs of this year himself with the money involved being 20 million dollars. However, this time, the deal is actually a strategy by the drug traffickers to lure the police undercover out. The undercover Brother Shan was accidentally exposed and the drug traffickers were chasing him in full force. On the other hand, suddenly, his undercover identity was no longer recognized and he got caught in the conflict between the good and the evil. Brother Shan needs to “prove his innocence” in time and smash the scheme of the big drug trafficker “Mr. Jin".
When an investigation financed by a wealthy businessman is about to end the operation of a dangerous drug cartel, his daughter and a brave soldier must team up to deliver evidence to the police.
Chinese actress from Anhui. National champion of martial arts, and loving ambassador of the Chinese Children's Charity Association.