The story revolves around Zhao Ran and his three friends Lin Duo, Jiang Yizhou, and Su Mi. It takes the three years of high school as the main line and is divided into four stages: enrollment, growth, transformation, and farewell. They constantly collide in the intertwined lives of friendship, first love, family and dream pursuit, and encounter laughter and trouble. Ridiculous misunderstandings, crazy campus activities, family turmoil, and exam pressure took turns, and several people gradually grew up in mutual support and conflicts. In the last year, they face farewell and choices, learn to accept themselves, and move towards adulthood with the regrets and beauty of youth. The book runs with humor and a tight rhythm throughout. It contains both relaxed and joyful daily life and sincere and pure emotional conflicts. The final chapter ends with a warm and yet playful atmosphere.