Chihiro and Tomohiro infiltrate the hideout of Bison's underground organization, which brainwashes women and sells them off as slaves, to destroy it, but Chihiro returns home tragically dead. They were supposed to get married after the mission was over. Tomohiro transplants his own brain and heart into Chihiro in order to avenge Chihiro. The two "Chihiros", now one and the same through the female body transformation, head back to Bison, but...!!