The Shi siblings juggle financial struggles, academic pressures, and constant sibling squabbles. Older brother Fen's carefree nature irritates his younger sister Miao, leading to amusing yet physical clashes. Luckily, their supportive friends, like Fen's scatterbrained but athletic best friend Kai Xin, and Miao's cheerful sidekick Miaomiao, are always there for them. The group is joined by the secretive wealthy Wan Sui, who hides his riches but remains fiercely loyal, occasionally involving his brother Xing in their escapades. Despite their sometimes misguided problem-solving, the gang embraces the ups and downs of high school life with a spirit of adventure and camaraderie.