Sung is just another regular guy. He's good-natured and doesn't stick his nose in other people's business. King, by contrast, is the embodiment of evil. A powerful triad boss, he's guilty of all the crimes there are under the sun, and uses judicial loopholes to carry out his criminal business. Sung and King are unrelated to each other, but a bottle of deadly Cyanide brings them together. Almost by accident, Sung ends King's life. King's death sends shock waves throughout the city. The triads are looking to carve out his business, while the police reluctantly take on the job of finding his killer…