In Sunshine Middle School, which is full of laughter and laughter, the mischievous A Dong and his classmates staged scenes of funny campus daily life. Foodie Li Xiaopang always "matches wits" with snacks in class. Academic tyrant Zhang Tingting tries hard to maintain order but is repeatedly led astray. Wang Kugaishui, who loves to show off, gets embarrassed in three seconds. Timid Chen Mengmeng often causes chaos over trivial matters. This group of friends with different personalities have hilarious stories happening every day in classrooms, playgrounds, canteens and other places. They use their youthful vitality and nonsensical behavior to weave a series of happy campus memories.