Retired fitter Lin Jungang attends a housewarming banquet hosted by relatives and friends, only to be mocked and humiliated by snobbish bullies. The brass escapement clock he painstakingly handcrafted over three years is even dismissed as worthless junk. As the truth gradually comes to light, this master craftsman of a great nation, who has kept his identity hidden, uses the extraordinary skills he has perfected over a lifetime to break through foreign technological blockades, safeguard Chinese manufacturing with his dedication to craftsmanship, and demonstrate the spirit of artisanship and a profound sense of responsibility toward his country and people.