Cutie Heart, a female warrior of the Future Cavalry, has continued fighting against the evil army Sigma Gang to protect Earth's peace. However, she encounters a special task force led by Nerugesu, a new threat from the Sigma Gang, resulting in her mask—the source of her enhanced powers—being destroyed by Nerugesu's bizarre ray. Desperately contacting headquarters for backup, the reinforcements are completely wiped out by Nerugesu's forces. Overwhelmed by regret and guilt over losing her comrades, Heart is mercilessly attacked by Nerugesu. To force her to reveal the secret of her photon energy body, he brutally beats her with a needle hammer, but Heart refuses to surrender the information. When physical force fails, Nerugesu resorts to humiliating her as a woman, attaching a remotely controlled glove to forcibly make her masturbate. As her pride as a warrior crumbles, Nerugesu further invades her with his long tongue, licking every inch of her body, penetrating deep into her most intimate areas, and forcibly implanting pleasure within her. Ultimately, Heart meets the worst possible fate—being completely ○'d by Nerugesu.