Hundreds of years after the "Scarlet Tide" swept across the land, the earth was occupied by twisted mutant creatures "Aberrations", and the remaining humans huddled in the huge barrier city "Yongning City".
Ling Feng, a scavenger who wanders in the ruins of the city, drives his dilapidated "rusty bone" exoskeleton in order to earn expensive inhibitors for his sister who is infected with the mutated virus, and lives with death and steel all day long.
During an ordinary scavenging mission, he accidentally discovered a mysterious humanoid aberration sleeping deep underground, and a biological core exuding strange energy on its chest.
This discovery, like a huge stone thrown into stagnant water, instantly broke Ling Feng's desperate life. The giant enterprise "Genesis" that covets the core power, the city defense army "Watchers" who believe in the iron-blooded code, and countless monsters in the ruins that choose people to eat all regard him as prey.
From a scavenger who just wants to live, to being forced into a huge vortex that determines the survival of mankind, Ling Feng must rely on his wisdom and the ever-upgrading "Rust Bone" to fight his way through the steel jungle and monster lair. He will uncover the shocking conspiracy behind the "Crimson Tide" and ultimately face a difficult choice: continue the old human order, or start a new era of coexistence with "aberrations"?
