Yan Ye, the owner of "Wild Scrap Station" in the Rust Belt area, always repairs broken heritage machinery late at night, but never sells the finished products. He only secretly gives the repaired small parts to his neighbors. Once, in order to save a child trapped by a malfunctioning machine, he urgently repaired the "energy core" lost by the Supervision Bureau. The light of the woven iron pattern when the core was activated was captured by Chu Heng, an agent of the Supervision Bureau. Chu Heng tracked down Yan Ye on the grounds of "illegal repair of machinery", but found that the machinery repaired by Yan Ye never had backlash - which was contrary to the Supervision Bureau's statement that "private repairs will inevitably suffer backlash". As the investigation deepened, Chu Heng discovered that Yan Ye's "Iron Weaving Technique" was actually related to the "Iron Weaver Legion" that disappeared in the wars of the old era. The Supervisory Bureau's pursuit of Yan Ye was actually to seize the secrets of the Iron Weaving Technique in his mind and cover up the truth about the annihilation of the Legion. Yan Ye's "civilian boss" vest is shaky. He must find the evidence left by the legion and break the supervisory bureau's monopoly lies before being exposed by Chu Heng.
