Ho Sau, an undercover agent, has been working with Yau, a drug lord, for years, but his job and family are in trouble. ...

A vigilante serial killer in Hong Kong leaves ominous death notices, prompting the police to launch a special task force to uncover a hidden conspiracy. ...

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