Chen Chuan, in charge of corporate meal subsidies, selects the street-side Hewei Snack Shop as a partner restaurant. Little does he know that the lady boss, Ma Guifen, haggles over even a fifty-cent packaging fee, rudely snaps at customers to their faces, and behind their backs switches ingredients and maliciously spreads rumors to smear competitors. Without making a fuss, Chen Chuan firmly holds onto the evidence, launching step-by-step counterattacks ranging from market backlash to regulatory intervention, ultimately making the unscrupulous restaurant owner pay the price. A tiny packaging box thoroughly reflects the conscience and bottom line of the business world.