Shi Chuan, a master chef for state banquets, is framed by his apprentice Gu Jingchen and loses his job, leaving him no choice but to sell 15-yuan boxed meals at a construction site. His home-style cooking wins everyone's hearts, and a wealthy businessman offers a huge sum to buy his recipes. Gu Jingchen resorts to every dirty trick, cutting off his ingredients, spreading rumors, and even setting a fire, but the construction workers rally to protect his stall. Xiao Jiang, an apprentice sent to steal his recipes, is moved by Shi Chuan's sincerity and becomes his disciple. At a culinary festival cook-off, Shi Chuan wins unanimously with a dish of Chinese cabbage in clear broth, soundly defeating Gu Jingchen. When the workers congratulate him, he declares that his boxed meals will remain affordable, preserving the warmth of everyday life.