Private detective Mariya Kinjo leads an ordinary life while harboring a secret: she is actually Steel Lady, a superheroine protecting world peace. One day, she receives a strange request from a man named Narita, claiming he's being constantly harassed by a mysterious enemy. Mariya immediately transforms into Steel Lady and rushes to the scene, only to find the evil emperor Mr. Boze waiting for her. Boze is executing a conspiracy to destroy global order, and he captures Mariya, forcing her to wear a rosary made of a special ore—the source of her weakness. Deprived of her powers, Mariya is subjected to brutal torture by Boze's henchmen. Unsatisfied, Boze decides to subject her to intense pleasure training, targeting the vulnerabilities unique to newhalfs. Mariya's body begins to crave pleasure involuntarily, betraying her own will. Can she reclaim peace for Earth? The story leads to Mariya's fate now in the hands of the evil emperor. [BAD END]