On the eve of the autumn harvest, repairman Lao Tie insisted on using genuine parts, only to be cursed by the villagers as a black-hearted merchant. The apprentice he personally taught relied on cheap fake goods to snatch all his business, and even threatened to make his old shop close down. Lao Tie did not bow his head, just quietly preparing his tools. Three days later, a rainstorm struck suddenly, agricultural machinery broke down one after another, tens of thousands of mu of food were in jeopardy, yet the apprentice fled with the money. Those who once cursed him now all blocked his door begging for help. Lao Tie picked up the wrench, taking the little apprentice rushing into the rain. This hard battle to snatch food from heaven, he wants to make everyone see clearly, what true craftsmanship and conscience are!