Between the endless brass pipes and roaring steam engines, lies the Iron City, shrouded in thick fog and soot all year round. There is no sun here, only eternal gas lamps and a huge "artificial sun" hanging in the sky - the "Day Star", a huge machine composed of countless gears and pistons.
Su Yeming, a young man who lives at the bottom of the city and makes a living by repairing ancient relics, lives an ordinary life running around paying for his sister's medicine. He thought his fate was just to be a tiny screw in this cold steel giant until it rusted.
However, everything is upended when he restores a mysterious star music box from the "old" era. The weird melody that should not exist in the world sounded in his ears a whisper from the other side of the star sea; the impossible star trajectory left a spiral abyss mark on his palm.
He is forced to embark on an extraordinary path called "The Path of Destiny". This is the only way for humans to fight against pollution and gain power. It is also a cursed road leading to madness and mutation. The ladder of promotion comes at the cost of reason, and the source of strength is the whisper of the abyss.
The church's "judgment order", the nobles' "mechanical order", the underground "fire thieves"... Various forces started chasing and competing around him. The prophecies of the ancient religious order, the old gods sleeping underground, the terrifying existences that shuttle through dreams, and the inescapable fate he was born with pushed him step by step towards the truth of the world.
