When the Markjin Empire launches a brutal invasion of Earth, the celestial warriors known as Primaveils stand as the only line of defense. To save her companion Korona and the innocent citizens from a devastating attack, Primaveil Tsubasa sacrifices herself and is captured by the sadistic Prince Garland. Now a prisoner of the empire, Tsubasa is subjected to horrific torture and violation as Garland seeks to break her spirit and extract the hidden power of the Saint Angel.