Zhou Yuan has been selling breakfast at the Experimental Primary School gate for six years, and was driven away as a dirty stall by Zhao Jinbao in association with Liu Meilan and Ma Zhiguo. Zhao appears clean, but actually sells overnight porridge, re-labels dates, skimps on employee wages, and uses the parents' committee to squeeze money through price fixing. Relying only on on-site cooking, children's honest words, parents' witness, and simple inspections, Zhou Yuan repeatedly makes the villains flip over in public. Su Qing turns from following rules to protecting fairness, and Xiaoman goes from being mocked to proudly shouting that this is my dad. In the end, Zhao Jinbao is suspended and pays compensation, Liu Meilan loses her parents' committee position, Ma Zhiguo is disciplined, and Zhou Yuan opens a clean, affordable hot porridge shop, harvesting peace and happiness with Su Qing and Xiaoman.