In 2077, the "Crystal Catastrophe" tore the world apart. The crystallized particles released by the out-of-control nanomachine swarm assimilated living things and machines into crystalline monsters "fall bodies". The survivors huddled in the high-walled city "Twilight City" and became the experimental subjects of the three major superpower consortiums - the Arctic Ice Coffin used cryogenic chambers to create "living weapons", the Molten Iron Colossus used mechanical prosthetics to extract labor, and the Blue Gene Institute cultivated controllable fallen bodies in incubators. Under the surface of the bustling city, the old-era AI "Webweaver Ω-01" cleans human genes through the "Quantum Sieve" project, while the underground boxing ring scavenger Lin Ye is involved in this genetic conspiracy that spans twenty years because of a crystallized chip engraved with "Ω-07".
