In 2309, due to rapid population growth and resource depletion, the future government exiled individuals deemed criminally inclined at birth to the underworld. Those who survived in the underworld evolved into zombies, transforming into beings known as Shura. Using time machines, they launched a coup into the present era, aiming to assassinate the developer of the crime-predisposition identification system. To stop this conspiracy, the future government sent the beautiful girl masked warrior Aurora to the modern age as a righteous agent. With her superior combat skills, Aurora defeats the Shura and corners the underworld's emperor—yet the emperor's power proves overwhelming. Hating the future government, he refrains from killing Aurora, instead defeating and tormenting her repeatedly, forcing her into countless states of helpless, rolling-eyed unconsciousness.