It tells the story of outside the Hongxing Machinery Factory, where veteran chef Lao Song, who insists on "small-pot freshly cooked, authentic goods at fair value," facing malicious competition, collusion, and squeeze-out by his apprentice He Daguang using low-priced inferior quality and thick-gravy rotten meat, would rather suffer losses and relocate than compromise his bottom line of conscience. In the end, He Daguang was imprisoned for causing a massive poisoning accident, and Lao Song returned to the factory gate to establish iron rules, winning back dignity with craftsmanship.