In the cyber city "Yuanhai City" where magic gears and neon holograms coexist, maintenance worker Lin Yuan just wants to make a living, until in order to raise his sister's medical expenses, he is forced to enter the mysterious arena connected to the East China Sea Dragon Palace - the Spiritual Equipment Cuju Competition. Relying on the unexpectedly awakened bloodline of dragon craftsmen, he transformed malfunctioning equipment with his bare hands, copied his opponent's stunts, and amidst the roar of suspended metal balls and the brilliance of ancient magic circles, he fought back from being a ridiculed "takeaway craftsman". However, when the gentle and elegant tournament host extended an olive branch to him, and when the mysterious silver-haired curator always appeared at critical moments, Lin Yuan gradually discovered that this was by no means a simple game. The greed of technology is sucking the luck of the ancient dragon clan, and with the bloody wrench in his hand, he must repair not only the malfunctioning spiritual equipment, but also the two worlds that are about to collapse. This is a cross-border legend in which maintenance workers use their skills as blades, fighting among gears and dragon scales to protect the people they love and the balance of the world.
