The story tells the story of Lin Mu and a group of classmates with very different personalities. In the three years of high school, they went from youth to maturity, stumbling and laughing with tears. The chaos in the dormitory, the bizarre incidents in the classroom, the psychological struggle of growing up, and the pursuit of secret dreams constitute a trio of campus youth. The first volume focuses on various funny adaptation events in the new semester, the establishment of friendships and conflicts; the second volume focuses on the undercurrent of love, growing pains and ambition breakthroughs; the third volume reaches the final growth in the sprint for the college entrance examination, separation and life choices, and is completed successfully.