In the crowd at the opening ceremony on the first day of junior high school, Lin Zhi and Xu Mian met for the first time. In the next three years, they became the most profound imprint of each other's youth. However, changes before the high school entrance examination made the two take different trajectories.
During the three years of high school, they drifted apart despite intermittent contact. It wasn't until fate made them meet again on the university campus.
From the age of thirteen to nineteen, from ignorance to maturity, this bond that runs through the entire youth, after the passage of time, finally came to the best answer. This is a story about growth, separation and reunion, telling how two girls find themselves and each other over six years.