Above the endless "miasma sea", a giant steam city called "Hydra" is the last barrier of mankind. Brass pipes wrap around the Gothic spire like a giant python, steam and thick fog linger all year round, and the sound of gears clenching is the eternal heartbeat of the city.
People believe in the "Lord of Order" composed of precision machinery and steam cores, and rely on alchemy and mechanical engineering to fight against the abominable things that occasionally poke out of the miasma. However, beneath the bustling surface of the city, ancient whispers never stop.
Clockmaker Su Ji, a weirdo who can hear "mechanical whines", lives in the rust area at the bottom of the city. He keeps company with cold gears and hairsprings, repairing scrap metal in the eyes of others. His biggest secret is a family pocket watch that never points to the correct time, and the ancient city that sunk under the deep sea with completely disordered geometric structure when he dreams about it every midnight.
When an out-of-control bionic doll was delivered to his workshop, and when the "detuned" sound that should not exist in the world materialized in his ears for the first time, Su Ji's peaceful life was completely broken. The pocket watch in his hand began to resonate with the pulse of the abyss, and the gears of fate screamed, pushing him to a path of no return.
He will discover that this steam city that protects humans is itself a huge and sophisticated cage. The master of order that people worship may be the source of their deepest fears. And his fate, long before he was born, had been composed into a crazy ending by the great being sleeping under the abyss.
