Drug mafia boss Koo is released, but the drug trade has not been stopped, and his first thought after his imprisonment is to take revenge on police officer Kevin Cheng, who put him behind bars. Ku hires a hitman, who, however, is clearly not himself....
Meanwhile, a group of sophisticated terrorists scares the population with a series of explosions in crowded places and extorts 10 million dollars from a trading firm. To cope with this situation and save the girl he loves, only policeman Kevin Cheng can do it.