Roujiamo stall owner Lao Lin insists on using freshly stewed meat every day, and after raising the price by one yuan, he faces questioning from diners. His apprentice Ma Biao seizes the opportunity to attract customers with low prices and secretly uses inferior braised meat to steal business. The factory supervisor, caring only about price, dismisses Lao Lin, who has steadfastly maintained quality. Lao Lin takes his daughter and shifts his business to the university town, slowly building a reputation through genuine ingredients. Soon, the inferior roujiamo sold by Ma Biao causes food poisoning and a safety accident. The factory representatives visit to offer a sincere apology and invite Lao Lin back. Sticking to his original intentions and guarding the bottom line of ingredients, he ultimately wins recognition and respect from everyone.