Sergeant Tong is wracked with guilt after he unwittingly kills a young girl whilst capuring a criminal named Cheung. When the girl's sister is later kidnapped in a ploy to get Cheung released, Sergeant Tong vows to find and rescue her before she comes to harm.

A friendship is formed between an ex-gangster, and two groups of hitmen - those who want to protect him and those who were sent to kill him.

Michael is a cop chasing uncommon serial killer Sung Ping, who one day kills off a scummy triad on almost a whim. Liking the aftermath, he proceeds to plan his next few killings much to the dismay of the local triads. Meanwhile, reporter Hak makes the real-life crime drama the fodder for his crime fiction serial. Before long, Ping begins using the fiction to fuel his own plans, and soon Hak is concerned that he may be responsible.

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.

A suspected criminal mastermind escapes from police custody, throwing the city into turmoil. With the police department now divided, rival police chiefs are forced to take their fight to the streets of Hong Kong with deadly consequences.

Five police officers in Hong Kong are kidnapped. The police commissioner is on a business trip overseas. Two vice commissioners, Sean Rau and M.B. Lee, then take over the case. The two vice commissioners are rivals who both vie for the police commissioner seat. At first, M.B. Lee takes the lead in the case, but comes to a dead end. Sean Lau then takes the lead, but he falls into a trap. Both men are then investigated by the ICAC (Independent Commission Against Corruption).

Wanted criminal "Helios" and his assistant stole a quantity of uranium and plan to produce weapons of mass destruction. They are planning to trade with a terrorist organization in Hong Kong. Chief Inspector Lee Yinming and Inspector Fan Kaming lead the Counter Terrorism Response Unit of the Hong Kong Police Force. Along with a Chinese senior official, a physics professor, and two South Korean weapon experts, they hope to defuse a crisis sufficient to destroy the world.

A streetwise young man becomes a bodyguard to score quick cash. He befriends a disillusioned mercenary determined to begin life anew. They find themselves working together to foil an assassination attempt, but their partnership ultimately can't last.

For never-do-well compulsive gambler Fong, there's only one thing more fearsome than debtors at his doorstep - having to coax a crying baby. But what if the baby becomes his golden goose to fend off his debtors? Can he overcome his phobia of diapers, milk bottles, and cloying lullabies?

Despite negative psychological evaluations, Mike Wong is assigned as the captain of the SDU, a special task force linked to the Customs Department. Their mission: apprehend nasty drug dealers, led by the “Ice Queen.” To do this, Mike has to team up with customs cop Minnie. Despite their clashes, the two learn to understand each other, but not before things get bad.