Former female professional wrestler Karin now serves as a member of the Earth Defense Force. One day, she is suddenly summoned by her superior, who reveals that the evil organization Earth End is attempting to steal a crucial data chip capable of destroying the world. To protect the chip, her superior proposes an extremely unusual plan—implanting the chip directly into Karin's body. Hesitant but committed to world peace, Karin agrees. However, Earth End tracks her down and begins torturing her to extract the chip's location. Karin endures the intense pain, but when it's discovered that the chip is hidden inside her body, a new crisis unfolds.