In the 1980s, Liang Jingfeng, a senior fitter at a state-owned factory, stands by his technical principles. However, his refusal to give up a promotion opportunity leads to a breakup with his fiancée. Having seen through the factory's unspoken rules and workplace politics, he resolutely resigns. Starting from scratch, he opens a repair and machining shop, facing repeated job rejections, financial shortages, and countless other hardships. With his exceptional craftsmanship, he refuses to compromise on quality and meets Lin Huizhen, a woman with keen business vision. Together, they embark on an entrepreneurial journey. Meanwhile, Sun Zhentao, who constantly resorts to opportunistic tricks and shortcuts, eventually suffers the consequences when his technical incompetence causes a disastrous failure. Liang Jingfeng relies neither on personal favors nor connections. With nothing but his outstanding fitting skills, he carves out his own career and finds both professional success and genuine love.