At a hospital in K City, an accidental reunion brings Gao Yuan and Huo Shang face to face after eight long years, reopening a chapter neither of them has truly left behind. In school, they were nothing alike—Gao Yuan excelled, while Huo Shang lagged behind. Their first meetings were filled with friction and misunderstanding, but over time they became the ones who helped each other grow, heal, and stay close. They even promised to enter the same university, until Liang Qi’s accident changed the course of everything. Huo Shang risked himself to save Gao Yuan and Liang Qi, then disappeared without explanation. Years later, the pain of that goodbye still lingers for Gao Yuan. When they meet again, the two finally confront what happened, let go of the past, and find their way back to being each other’s most important friend.