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.

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".

The two messengers, Hong Gu and Lushui, were assigned the task of secretly protecting the delivery team of the imperial court's disaster relief cash box. The junior sister Hong Gu was arrogant and did not understand why the messengers worked in the dark every time, as if they could not see the light. On the way, the cash box was robbed, but Hong Gu, who should have reported the letter in time, ignored Lu Shui's dissuasion and acted rashly and got involved in the fight. The man in black who robbed the silver box was highly skilled in martial arts, and the Yin-yin team was defeated. In the chaos, Aunt Hong caught a suspicious beggar and handed it over to Lu Shui to take care of her, while she went after the money box desperately. The beggar tore off the green water veil and fled, but accidentally left a jade pendant and fell to the ground...

The unemployed Yin Yin, in the unintentional pit of the good brothers and the crazy chasing of the black road dragon brother, accidentally sneaked into the Ruyi Jiazheng company, but he just got out of the wolf and into the tiger's mouth, and the housekeeping boss helped Yin Yin escape. As a result of the pursuit of killing Yin Yin to do his own free labor, Yin Yu began his male career as an extraordinary and hilarious family life career... Love the vain single mother Wang Lei, naughty Tao Tao, Mei Ling’s mother-in-law, Xiao San The intent of the intrigue is related to the mystery of Yin Hao’s being chased by Long Ge, and it also detonated the final battle between Yin Yi’s unaccompanied person and the gangster’s dragon brother.... ..

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.