Burying our pain and suffering, we grow up. Shufan, a quiet loner, and Zi Qian, the popular boy in class, are childhood friends. They have opposite personalities, but Shufan, who was forced to become independent early on due to his family's circumstances and is anxious about his future, has always had Zi Qian by his side. However, there is something hidden behind Shufan's smile. What will be the end of their coming-of-age together?!