Schoolgirl Rina is suddenly attacked by a vicious gang and tortured, her life now in danger. However, due to her strong sense of justice, she is granted the power of the beautiful girl warrior Aurora by a goddess. Possessing mystical abilities, Aurora vows to defeat evil—but first, a chainsaw-wielding monster appears. The creature slashes through her costume and flesh with its spinning blade, tormenting her as she continues fighting, bleeding and battered. Aurora eventually collapses unconscious before her enemy, then is captured and restrained, subjected to brutal interrogation as they seek to uncover the secrets of her power.