Qi Shan and Zhou Zan, childhood sweethearts, grew up with their families hoping they'd end up together. However, due to his family's troubled past, Zhou Zan is wary of love and holds back, despite staying close to Qi Shan. Tired of waiting, Qi Shan chooses to move on with the reliable Wei Ziqian, who happens to be Zhou Zan's half-brother, creating tension. As they transition from high school to adulthood, they navigate emotional challenges in search of happiness.