At the beginning of the second year of high school, Xie Shiyan, the top student in the grade, was surpassed by transfer student Wen Peiran for the first time by three points. A silent competition about academics begins between two teenagers with very different personalities. By chance, they became classmates because of the top class formation.
Wen Peiran comes from a wealthy family and is confident in his sunshine. He breaks into Xie Shiyan's world like a little sun. He was curious about Xie Shiyan's indifference, and gradually became aware of the loneliness behind his indifference. In the interaction between Wen Peiran's friends He An and Pei Shang, and Xie Shiyan's only friend Yan Yu, a special "F5" small group was quietly formed. Accompanied by his friends, Xie Shiyan's closed heart gradually opened.
Xie Shiyan's past is also gradually revealed: his mother left, and his father neglected him after reorganizing the family. He is like an isolated island, accustomed to facing the world alone. The appearance of Wen Peiran made him feel sincere companionship for the first time. The two turned from academic rivals into important friends, encouraging each other and growing together in their youth.
On the eve of graduation, an accident caused them to misunderstand each other, and since then they have embarked on different life journeys. Years later, they have blossomed in different fields, and the intersection in their youth has also become a profound mark on their growth...