Lu Chen, who failed the college entrance examination, worked as a welder at the Feilong Shipyard in a small coastal town, but accidentally found half an alien alloy in a scrap pile. From then on, a complete blueprint for manufacturing mechas broke into his mind. With his "talent" far beyond his own knowledge, he secretly created the "Imperial Cavalry Armor", but it caused energy fluctuations on the night of activation, alarming the Dragon Academy, the Public Security Bureau and the Navy.
The Dragon Academy was shocked by the technology that was fifty years ahead of its time. The army blocked the shipyard with heavy troops, and the navy mistakenly regarded the mecha as a "privately manufactured weapon" and attempted to arrest him. At this time, the mecha suddenly triggered the "Dragon Machine Plan", and its target was the "invasion of foreign civilization." Before Lu Chen could figure out the truth behind his father's disappearance ten years ago, he was already at the forefront of human defense. The mechas in the rusty iron factory were about to rewrite the fate of the world.
