Song Siming, a student at Jiangcheng University, buys a roasted duck leg outside the campus gate, only to discover that street food stalls nowadays are both expensive and terrible. To make matters worse, the vendor mocks him, saying that if he can't afford it, he shouldn't buy it. Furious, Song Siming decides to start a snack business with his family at their own noodle shop, taking on the street vendors. Their delicious and affordable snacks quickly win unanimous praise from the students, but also provoke attacks from various street vendors. As the vendors repeatedly target them, Song Siming and his family thwart their schemes one by one and build an increasingly excellent reputation. Eventually, they become the most popular shop at Jiangcheng University, while the street vendors, having brought about their own downfall through their outrageous antics, are left with nowhere to go and no customers.