Sent into a drunken tailspin when his entire unit is killed by a gang of thrill-seeking punks, disgraced Hong Kong police inspector Wing needs help from his new rookie partner, with a troubled past of his own, to climb out of the bottle and track down the gang and its ruthless leader.

Chan Wing Yan, a young police officer, has been sent undercover as a mole in the local mafia. Lau Kin Ming, a young mafia member, infiltrates the police force. Years later, their older counterparts, Chen Wing Yan and Inspector Lau Kin Ming, respectively, race against time to expose the mole within their midst.

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.

When Hong Kong is rocked by multiple gruesome murders, the police forms a task force to investigate.

After suffering life changing injuries in the line of duty, bomb disposal officer Fung turns his back on the police. But when a devastating series of bombings sweep Hong Kong, the police suspect their former ally may be involved after he is found unconscious at a crime scene. Now faced with memory loss and recalling only fragments of his former life, Fung sets out to uncover the truth and find out who he really is.

A cop, a lawyer, and an assassin cross paths after the murder of a federal witness and the kidnapping of a famous pop star.

When a terrorist who specializes in explosives takes hold of an underground tunnel, he threatens to kill hostages if his demands are not met.

The details of undercover police officers are deleted from a police database and a senior officer is left struggling to know who are the undercover officers and who are the criminals.

Cheung Sung-bong is a highly respected cop with a long history of success in dangerous cases. However, his past soon comes back to haunt him when a former protégé resurfaces, seeking revenge.

The fairy tale of childhood is that our lives will follow an ideal trajectory. Destiny decides otherwise for Wing-Kai who becomes bedridden, paralysed from the neck down after a car accident. The monotonous hospital life depresses the young man. Years later, he meets a young girl who is caring for her boyfriend in vegetative state, believing that her love will wake him up eventually. Wing-Kai ridicules her innocent optimism. When the young man recovers miraculously, hope reawakens in Wing-Kai who begins rehabilitation training with great fervour. However, time passes and everything remains the same. Sinking into even deeper despair, Wing-Kai tries to regain control over his own destiny.