In the year 2060, a meteorite struck the Arctic ice cap. Earth became a paradise for gigantic unknown creatures known as "Mutant Beasts." The universal energy source, "Elysium Crystals," discovered within the meteorite, granted humanity its last hope. With the establishment of the first floating city, "Utopia," humanity officially entered a new era—NC0001. In the year NC0020, a mysterious girl appeared… Will she lead humanity to reclaim dominion over the world, or bring about its destruction?