In the Iron Dome City where gears roared and black smoke blocked the sun, Xu Yu was just a low-level watchmaker apprentice. He is gentle, sensitive and kind, like a quiet deer, always in awe of machinery and life. However, this tenderness is taken as weakness. An unexpected divorce broke the peace, and the superior fiancée tore up the marriage contract in public. Shao Wen, the chief mechanic who had always been regarded as Xu Yu's mentor, comforted him sadly on the surface, but secretly greedily poached the only relic left by Xu Yu's parents - the high-end steam core.
In a desperate situation where his family was destroyed, Xu Yu awakened the Golden Finger "Origin Engine" when he was on the verge of death. This mysterious gear beating in his mind allows him to see through the flaws and limits of all machinery and make perfect modifications. When kindness is forced into a desperate situation, the gentle deer will also grow antlers that can tear through steel. In order to expose Shao Wen's hypocritical charity mask and save the innocent civilians who were used as human body modification experiments, Xu Yu picked up the wrench and drawings. From a simple steam gun to a roaring steel floating fortress, let's see how this gentle young man uses his blood as fuel to forcibly smash a road to the dawn of the Mechanicus in the twilight of the steam age.
