It is a legend that when the gods and immortals turned to rust together in a disaster called "Skyfall", the world was left with only endless yellow sand, twisted steel ruins, and humans struggling to survive among them.
On the embers of civilization, a new system was quietly established - people no longer breathed out spiritual energy, but instead "engraved" runes on mechanical prosthetics made of brass and steel, squeezing extraordinary power from the cold metal. This is the era of the "engraver".
In the border city "Black Iron City" shrouded in huge gears and thick steam, young Gu Chuan is just an ordinary person running a repair shop that is on the verge of bankruptcy. His biggest wish is to save enough money to replace his lame father with a pair of alloy legs that are not so painful.
However, an unexpected repair brought him into contact with the dust-laden truth of the world. He found that he could "hear" the scream of metal and "see" the deeper rhythm beneath the rune sequence.
The gears of lies and conspiracies began to turn. Greedy plutocrats, predators wandering the wasteland, remnants guarding the secrets of the old era... All forces gathered together like wild dogs smelling the smell of blood.
In order to protect what he had, and to give this fucked world a resounding slap, Gu Chuan was forced to embark on a road full of oil, rust and blood.
"The truth? In Black Iron City, my wrench is the truth."
"Can't beat it? It doesn't matter, I will always find a way to make you feel worse than me."
