خلاصه داستان : دختر آهنی: جنگ های پایانی یک زن جنگجو سایبورگ در پی پیوستن به نبرد سه جانبه بین ماشین‌ها، ارتش و انسان‌ها، به دنبال بازیابی خاطرات خود است...

In 20XX, Japan is full of Cyborgs. Human developed Artificial Intelligence JUDA to protect the Earth. However, JUDA started to attack humans since humans were planning a nuclear war and they are the real enemy of Earth. The fight between Human and Cyborgs flattened Japan. A military company started developing a secret weapon. Before its completion, the weapon was stolen. If the weapon is completed, there would be a final war. Vigilante “Resistance” sensed the danger and stood up. Meanwhile, people were turned into a Murder Weapon after their death. Those cyborgs include Chris had lost their memories. One day Chris has a fateful meeting with a mysterious girl Sara. However the mysterious girl Sara was the final weapon SARA.