The movie follows the wealthy Squire (Xu Jin Jiang) who has one obsession which is to be best in the art of sex. However, he is extremely strict with his own daughter Yau (Loretta Lee). When she is sent away to study he has disguised her as a boy and putted on her a chastity device with sharp rotating blades to protect her from men like himself. However she falls in love with a young swordsman who is pursuing the deadly demon called the Mirage Lady (Shu Qi). The demon is using her sexual power to drain peoples energy so they die. And a deadly confrontation is bound to happen when the Mirage Lady is married to Yaus father.
In order to let his daughter Ximen Rou (Loretta Lee) to avoid the rapist, rich Ximen Jian (Elvis Tsui) command to go to school dressed it for the man. Meet scholar Huadao after Ximen became friends with Rou, but when her daughter body was discovered the identity of Huadao, the other desperately launched its pursuit. Ximen Jian abnormal lust, after the idiot son to marry a beautiful wife, and coveted daughter's beauty, her desire satisfied concubine, I do not know the beauty of hand originally married witch magic Ji (Shu Qi) in disguise. Magic Ji know mining yin yang, the dark side of the Ximen Jian concubines in addition to killing one, but would like Ximen Jian in the final exhaustion of the essence. Ximen and his daughter attempted to uncover the magic Kyi ikebana conspiracy, a war started.