Lu Xiao and Meng Yao, classmates at a university in Jiangnan, fall in love at first sight. Yang Yu, who has long pursued Meng Yao, shares a close bond with Lu Xiao over their love for basketball, while Zhu Na passionately chases after Lu Xiao. As these relationships unfold, a mysterious figure quietly intervenes, sparking a series of events that entangle them for the next twenty years.
| Actor | Role |
|---|---|
 Lai YumengMeng Yao | Meng Yao |
 Liu DongqinLu Xiao | Lu Xiao |
 Zhu DanniZhu Na | Zhu Na |
 Wang PeiweiYang Yu | Yang Yu |
 Jin QiaoqiaoMs. Hua | Ms. Hua |
 Li JingjingAunt Niu | Aunt Niu |
 Yan QingyuMother Meng | Mother Meng |
 Wei QingGrandma | Grandma |
| ZZhong XiaodanAunt | Aunt |
 Zheng YujiaChi Shanshan | Chi Shanshan |
 Le XuanHuang Qiugang | Huang Qiugang |