The story revolves around Lin Ran and his classmates' three years of high school life. From the fresh excitement of entering high school, to the collision and integration of various small groups, to challenges such as academic pressure, youthful crushes, and family changes, everyone experiences misunderstandings, indulgence, regret, laughter, and growth together. In the humor and banter, the teenagers support each other, misunderstand and reconcile, secretly compete, and work together to face big exams and life choices. Finally, when the farewell season comes, everyone moves towards the end of their own youth with scars and growth. The story is relaxed and relaxed, the plot has ups and downs, and the theme profoundly expresses the sincerity, confusion, throbbing and beauty of youth.