In the near future, in a super city "New Arc City" that has been completely transformed by nanotechnology, an out-of-control nanorobot plague has turned the vast majority of citizens into "nano-infected bodies" that only know how to kill and devour. The order of the city collapsed, and the survivors struggled to survive in the steel jungle.
The protagonist Ling Xiu, a promising prosthetic engineer, is now just a scavenger who relies on modification and repair skills to survive in the ruins. He is cold, self-interested, and only trusts the tools and data in his hands. However, when he discovered that the infected bodies were undergoing horrific "evolution" and even showed signs of coordinated operations, he realized that the end of fighting alone was over.
In order to survive and to uncover the truth of this disaster, Ling Xiu was forced to form a temporary team with the mysterious former special service member Han Ya, the young scientist Fang Zhou who holds core secrets, and others. They will travel through a city ruled by death and steel, fight against the constantly mutating terrorist infections, and uncover the dark conspiracy hidden behind the prosperity of science and technology. In this fissured city, the light and darkness of humanity will be more lethal than any technology.
