The two-year-olds from Xiaoshan City Municipal Secondary School and the first class of senior high school who are struggling to get into the second grade of college, the grade bosses, the math scumbags, the English scumbags, and the art students support each other and face the difficult history of blood and tears together. The shining glass of water, the one-size-larger school uniform, the endless exercise books, the lack of sleep, and the friendship that will never give up are the true youth that never ends. Let's go to college together! On the first day, Sun Nan: "Sister! Accept me as your younger brother!" Wang Zhengyi: "Huh?? Eh?? Why???" Sun Nan: "From today on, I will be your younger brother!" Wang Zhengyi: ".... Okay... As long as you are happy..." A week later, Sun Nan: "Sister, we are all your admirers! We will all be your younger brothers from now on!" Wang Zhengyi: ".... So why do you want to be my younger brother... ."："！"："......."："！"："！？！"："！"："，！"："？？"：""