On the first day of her first year of high school, Gu Xingyao was assigned to a class that she thought was very ordinary. She has always been a girl who doesn't like to be in the limelight and just wants to spend her high school life quietly. But fate led her to meet Lin Muchuan, a young man sitting by the window. When he lowered his head to write, his eyebrows were delicate and his smile was like the summer sunshine.
The worlds of Lin Muchuan and Gu Xingyao seemed unrelated, but as they met unexpectedly again and again, their relationship gradually became closer: the tacit understanding when participating in class activities together, an accidental walk together on a rainy day, an unintentional look at each other on the playground... Gu Xingyao discovered that there are so many emotions in youth, which are unspeakable yet so real.
Their story begins on the basketball court in the spring breeze, and they have experienced the cheering and shouting at sports games, the busyness of club activities, and the whispers conveyed by small notes... Gu Xingyao always felt that her love for Lin Muchuan was well hidden, until the day of graduation, Lin Muchuan handed her a photo album, which was full of daily moments that she had never noticed.
The story has no clear ending, only the words hidden in the wind: "If we meet again and we are still classmates, I will be very happy."