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

A terrorist expert in explosives, whose gang has been dismantled, seeks revenge. He threatens to blow up a Hong Kong tunnel with hundreds of hostages. The pol ...

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