Ten years ago, on a train home, fate brings Xiaoxiao and Jianqing together. Like many young couples, they meet, fall in love, and strive to make it work, but eventually, the harsh realities of life make them drift apart.

Ten years ago, on a train home during the busy Spring Festival travel period, fate brought Xiaoxiao and Jianqing together. Like many young couples, they met, fell in love, and strove to make it work, but eventually, the harsh realities of life made them drift apart. Ten years later, they run into each other again. Will they make the most of this second chance and rekindle what they once lost?