Lu Zheng, born into a military-industrial family, is reborn ninety days before the Chiyan Machinery Factory goes bankrupt. The steel mill cuts off its supplies, creditors come knocking, and his ailing father entrusts the factory to him. Lu Zheng makes a solemn pledge: he will not manufacture a single gun or bullet. Instead, he will adapt military-grade craftsmanship to civilian products for well digging, drip irrigation, cold-chain transport, and rescue work, selling out in the postwar desert. Mao Dou, Shen Zhixia, and Ma Tiechui join him one after another, while Middle Eastern merchants bring major reconstruction orders. When unscrupulous businessmen cut off credit and spread rumors, officials make things difficult, and foreign giants manipulate tenders, Lu Zheng fights back step by step with standards, compliance, and an alliance of twenty factories. In the end, he wins global contracts and opens a new factory. The arms merchants' smears collapse under the truth: wells and roads are the real answer.