Kerusu, the messenger of justice who descended upon the shining blue Earth, takes human form to save the planet from crisis. Assuming the body of nurse Ai Ikuta, she fights as "Primetheus Amor." However, during an attack by the space monster Ostro, she finds herself in grave danger. Her breasts are groped by the enemy, her private parts violated by foot soldiers, pushed to the brink of defeat. Yet relying on the power of her image suit, she ultimately grows to giant size and confronts Ostro. Her form possesses overwhelming power and breathtaking beauty, captivating all who witness her.