Nine years have passed since the global catastrophe. While the various powers are violently fighting for supremacy in the new world, a young man, Naoki, who has been physically altered, meets a girl who drives a mechanical animal called "Kamui". Naoki tries to protect the girl, Hinako, who is called the savior of the world, but a giant worm-type animal machine from the continental system and a crow-type animal machine from Mars attack them mercilessly. The battle for the survival of the human race is depicted with great detail and attention!