Chan Siu Hong is a lawyer who goes into jail after hitting a vicious policeman. He's welcomed by the inmates because he convinces fellow inmates not to use violence to settle every dispute.
Wayne is a hitman who wants to retire, so that he can provide a safe life for his wife and their soon-to-be-born baby. He also wants to go legit so that he can convince his dying boss to give up the gangster lifestyle. However, Lai finds getting work in post-Handover Hong Kong tough, and decides to take one last job.
Police Inspector Pao is trying to catch Mak Kwan, a gang member who is first arrested, but then escapes from the prison. By chance, Pao realizes that the target of Kwan's gang is the H.K. Jockey Club
Two Cops, one young and hotheaded, the other aging and by-the-book, are teamed up to break a case involving a series of Jewel heists by a ruthless young gangster and his illegal immigrant gang.
Simon Yam, gang boss, turns himself in to the cops in order to spare his buddies. He spends ten long years in jail during which his no good wife gambles away all his money and raises his little daughter into an ungrateful slutty teen with an attitude. When he returns to his former life. He generously loans money to a high class gal, Cecilia Yip with financial troubles. His wife and daughter leave him. In despair over the mess he has made of his life, he proposes to Cecilia hoping to start over and go straight. In spite of their different class status, the two fall for each other and make a go of her failing factory.
The story follows Hunter and Yat, two new hot shot recruits, who under the watchful eye of their commanding officer, Yuk Pai, rise quickly through the ranks, enduring much mental and physical hardship along the way. Their new found skills are put to the test when renegade SDU member returns from seclusion in Thailand to wreak havoc on Hong Kong and the SDU's most secret missions.
A look at the SDU in the Royal Hong Kong Police Force - how members are selected, how they are trained, their lives, what they think, the relationships between SDU members and their friends and the pressures they face.
