Similar storyline to "Naked Killer".
Mo Ling was saved from a gang of rapists 8 years ago, in Tokyo, by Lady Boss Chao and her guard. Since that time, Mo Ling has done hitwork for Boss Chao. She is ingenious and daring. For instance, the movie opens with Mo Ling flying past a window (using a body kite) and killing the target with a thrown dart.
But her heart begins to soften when she meets Chao's younger brother, the ladies man Wei Li. Also, the police are onto her, on the form of Chief Fu.
And if that's not enough, Mo is to be killed off by Chao's guard, just so she is no longer a danger. But Wei Li hears of the plan, and tries to prevent it. This leads to a fierce final battle.....