A journalist photographs an assassin in the act of execution, but the assassin lets her go. The same thing happens again, and the assassin's gang question his motives.

Kwai-Len is a Hong Kong divorcee who flees an abusive husband in Hong Kong to live in Japan.

During the Japanese occupation of Shanghai, a Chinese woman trains in the covert arts. When she arrives in Hong Kong, she learns that her brother works on behalf the Japanese cause. She then pulls together a team of women warriors to stop her brother