Chen Qingshan, a descendant of Lu Ban's woodworking tradition who lives quietly among ordinary people, possesses extraordinary woodworking skills passed down for thousands of years. Yet he keeps his talents hidden, silently enduring his injuries and illnesses while faithfully upholding his master's craftsmanship. As modern woodworking companies struggle with the dilemma of AI mass production versus traditional handmade craftsmanship, one crisis after another erupts: exhibition pieces are damaged, investment funds are on the verge of running out, and construction sites collapse. Using the ingenious techniques of ancient mortise-and-tenon joinery, Chen turns the tide, understands the natural grain of living wood, and resolves life-threatening dangers. In the clash between technology and craftsmanship, he proves that traditional skills possess an enduring power to thrive, and that the flame of craftsmanship will shine anew in the modern era.