Xiaolu (played by Dong Zijian) has lived a life of dependence with her mother since she was a child. Although it is not easy to make a living due to her poor family background, Xiaolu has grown up smoothly and happily with her strong resilience and optimistic spirit. Together with her good friend Azhi (played by Lin Bohong), Xiaolu spent a wonderful three years in high school. The beautiful and kind girl Xinrui (played by Yan Zhuoling) brought Xiaolu beautiful memories and visions of love in these three years. In a blink of an eye, graduation season is approaching. Under the trick of fate, Xiaolu and Xinrui were admitted to different universities. The distance between them gradually changed their close relationship. Although Xiaolu has been very active in maintaining this long-distance relationship, he slowly feels that Xinrui's attitude towards himself is different from before.