Movie Story : Akira is rescued from a group of vigilantes by Tetsuko, a practitioner of the martial art known as Hadakaken. When Akira's boyfriend is taken captive, she decides to learn Hadaka Fist to save him. The technique, however, defeats opponents through sexual intercourse, so mastering it would cost her her virginity. Torn between her loved one and her own innocence, she is pulled into a conflict that leads to a deeply sorrowful end.