Chein is a city boy who moves with his cousins to work at a ice factory. He does this with a family promise never to get involved in any fight. However, when members of his family begin disappearing after meeting the management of the factor, the resulting mystery and pressures forces him to break that vow and take on the villainy of the Big Boss.

If you pay attention through the movie, you can tell when or not Cheng will kill in a fight. When it's just a "fun" fight, he would wear either brown or blue pants with a t-shirt and a blue sash. But in a serious fight, he'd wear a long sleeve shirt with black pants and a white sash. This may be because in Chinese culture, white is a symbol of death.

Cheng Chao-an:
Just keep away. Go on. It's not your fight.

Revealing mistakes: During the fight inside the ice factory when Cheng gets caught, he ducks down a little too obviously before his opponent throws an object at him.

Lyrics by James Wong
Performed by Mike Remedios
(English Dubbed Japan Version)