Lin Chuan and his friends spent three years at Haining No. 2 High School. At first, they just played and laughed and did not study. Until faced with the crisis of class competition and final exam, everyone worked together and showed their talents. There are not only funny classes, interesting friendship stories, and bizarre oolongs, but also friendship breakdowns and reconciliations, secret loves, and confessions. Lin Chuan and Su Waner gradually get closer through misunderstandings and growth, Gao Shuang realizes his sports dream, Wei Zimo finds himself, and Zhuang Xiaohua expresses his heart frankly. Facing the college entrance examination, family relationships and self-choice, everyone grew up in laughter and tears, writing the most passionate and special chapter of youth.