Yu Ching seduces the innocent Yuk Lam and sells her to a brothel where she gets the attention of a general and eventually has his child. But Yu Ching schemes again and more disasters befall Yuk Lam, until finally, her sister must take revenge.

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