Li Bayue (played by Yuan Fan), Chen Jiaxing (played by Chen Tianyi) and Wang Yuhai are playmates who grew up in the same village and have a very good relationship with each other. After graduating from junior high school, Chen Jiaxing moved to the county town with his family. He and Li Bayue relied on letters to communicate. After a while, the friendship between the two people who were just beginning to fall in love gradually turned into love. In an accident, Chen Jiaxing was sent to a juvenile detention center for fighting. Because she couldn't receive his reply, Li Bayue decided to go to the county town to find him. Chen Jiaxing's family didn't want Li Bayue to know about the scandal at home, so they lied that Chen Jiaxing went out to work. The sensitive Li Bayue mistakenly thought that Chen Jiaxing wanted to distance herself from herself, and she chose to let go sadly. At this time, Wang Yuhai, who had always had a good impression of Li Bayue, took advantage of the opportunity and took care of Li Bayue meticulously. In the end, the two came together.