Lee Ying, who is the chief inspector of Regional Crime Unit, is newly promoted to Royal Hong Kong Police Cadet School as Deputy Commandant. He confronts a group of youngsters of different social backgrounds, turning them into self-disciplinary and self-contained young men.

Liu and Keung are competent constables and good partners. But Keung is fired just because of a minor mistake. Gradually falling into a financial crisis, Keung is forced to commit crimes. Liu wants to help but he himself is trapped and has to face internal investigations. As his young brother Raymond is assigned to arrest Keung's gang, Liu is put in a dilemma. Finally, Keung promises Liu he'll give himself up. But the gang won't let them stay alive for long.

A love triangle between a singer and two men; one good, the other evil.

Traffic cops set out to take down a spoiled, rich, reckless driver responsible for a school bus accident, in writer/director Danny Lee's examination of Hong Kong's traffic police, their joys and hardships.

A pair of detectives are after a smuggling ring, and when they come to the leader, they need back-up by a navy seals team - as the traffickers possess not only drugs, but heavy military equipment.

Scientists install a micro chip, called Black Cat, inside the brain of a violence prone girl named Catherine in an attempt to refine and control her fits of rage. Their plan is to turn her into the perfect government secret agent "killing machine".