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.
Di tahun 20XX, Jepang penuh dengan Cyborg. Manusia mengembangkan Artificial Intelligence JUDA untuk melindungi Bumi. Namun, JUDA mulai menyerang manusia sejak manusia merencanakan perang nuklir dan mereka adalah musuh nyata Bumi. Pertarungan antara Manusia dan Cyborg meratakan Jepang. Sebuah perusahaan militer mulai mengembangkan senjata rahasia. Sebelum selesai, senjata itu dicuri. Jika senjata selesai, akan ada perang terakhir. Vigilante “Resistance” merasakan bahaya dan berdiri. Sementara itu, orang-orang berubah menjadi Senjata Pembunuh setelah kematian mereka. Cyborg-cyborg itu termasuk Chris telah kehilangan ingatan mereka. Suatu hari Chris memiliki pertemuan yang menentukan dengan seorang gadis misterius Sara. Namun gadis misterius Sara adalah senjata terakhir SARA.
