As the last "human specimen" of the old era, Chen Mo lives in the Garden of Eden, a perfect greenhouse created by the Era Revival Committee. Until three knocks from the abyss shattered his life in captivity. He resolutely escaped from the false paradise and fell into the "Rust Belt", a huge ruin at the bottom of the city. Here, he got acquainted with the settlers headed by Hound and Murphy. They struggled to survive in the steel wreckage like mice, tenaciously resisting the rule and oblivion of the committee.
Chen Mo soon discovered that his identity as a "specimen" was far from simple. His genes are the "key" to unlock a dusty secret. The committee is searching for him at all costs, not for protection, but for carrying out a terrorist plan called "Cornerstone", attempting to copy and "optimize" his genes to activate the "ark" that escapes the planet, and abandon and destroy all "unqualified" along with the awakened ancient terror - "Echo".
From a prey who was forced to flee to a warrior who took the initiative, Chen Mo must join hands with his companions in the Rust Belt to face the erosion of "Echo" in the gap between pursuit and conspiracy, uncover the truth of "The Ark", and before the committee initiates the final destruction process, ignite for all the abandoned lives... The fire of hope that is struggling to survive in the cold corrosion. This is a desperate struggle for survival, lies and self-awakening.