The story takes place in an ordinary middle school in a modern city, with Lin Xiaoyu and his classmates as the protagonists. The first volume starts from the new semester and revolves around the interesting things, misunderstandings and conflicts in campus life, showing the playfulness and tacit understanding among classmates and establishing the friendship of the main characters. In the second volume, due to a major campus competition, he was involved in an inter-school competition. All kinds of laughter and worries went hand in hand, and friendship and growth gradually deepened. In the third volume, facing the pressure of entering higher education, youth confusion and separation, everyone experiences challenges and reconciliation, influences each other and grows together. The book uses ups and downs of the plot and humorous dialogues to connect three years of middle school life, from innocent admission to farewell graduation, showing the excitement and excitement of campus youth.