The third year of high school is dark for many people, but Zhao Yifan's heart is even more dark. While everyone is struggling for the college entrance examination, Zhao Yifan lives a mediocre and zombie-like life every day. One day, someone called Zhao Yifan from behind. Zhao Yifan panicked and left in a hurry. Life at school remained calm, but Zhao Yifan was feeling a little turbulent inside, but he pretended to be calm on the surface. Everything must be faced, how should Zhao Yifan face his unbearable past...