Liu Guangming, once a renowned master chef of state banquets, is framed by his beloved apprentice, Zhang Haotian, and falls from grace. To earn his daughter's school fees, he retreats into the streets and sets up a boxed-meal stall beside a construction site, offering all-you-can-eat meals for just 15 yuan. Though his surroundings are humble, his culinary skills amaze everyone. Wealthy businessmen offer him huge sums for his recipes, but he firmly refuses. When Zhang Haotian cuts off his supplies, sets fire to his stall, and sends an undercover spy to steal his techniques, Liu Guangming remains unfazed. At a culinary competition, he sweeps the field with a long-lost state banquet tofu dish and exposes the conspiracy. Ultimately, the newly crowned champion returns to the streets and opens a special charity counter, warming the hearts of countless passersby with delicious, affordable food.