The Dingfeng Meat Processing Plant falls into a shutdown crisis due to a "standard sample pig," and meat-cutting master Sun Maocai is accidentally dragged into it. Using data and experience, he breaks rigid rules, uncovers high losses and old interest chains, and leads the workers to rebuild the cutting process. Faced with Cao Zhenhai's technical authority and master-apprentice pressure, Dingfeng finally learns to let everyone make independent judgments, freeing the production line from relying on any single "first knife" and truly standing firm.