26-Year-old Ruan Tian often fantasizes that if he could go back to the second year of junior high school and start over, he would risk everything to get the first place in the grade, set an example of unity among teachers and students in the school with his class teacher, Lao Liu, say sorry to Ye Zi, the classmate next door whom he had a dispute with... Or grab the class monitor Lin Xun's hand and tell him: I really like you.
Concept: When we miss something, we always want to go back, but find that no matter how many times we repeat it, we can't be 100% satisfied. If you had a time machine, what kind of perfect ending would you use?