At the Mancang Fast Food Restaurant beside the suburban construction site, owner Zhou Mancang saw that nearby workers had high dining demands and stable consumption, so he unilaterally hiked the box lunch prices and secretly reduced the portion sizes of dishes. After learning about this, team leader Li Yan took the lead in leading all workers to collectively boycott and no longer patronize the shop. From his initial arrogance and disdain to later panic and remedy, Zhou Mancang tried various means to try to win back customers, but every time it backfired and he was repeatedly slapped in the face, ultimately causing his business to plummet and paying the price for his greed.