A handsome fighter and a beautiful martial arts warrior are foced to combine forces to combat a mutual enemy.

In Shanghai, Hai-nan, son of a Chinese official, is found stabbed on the street. But when the culprit, Li-fang, is apprehended, she refuses to reveal her motives. Meanwhile, a police officer grows suspicious of the officials’ rush to close the case. As he searches for leads in the case files, a shocking truth about Li-fang is revealed.