After the protagonist Li Meng broke up with his lover Zhuo Yan, who had been in love for seven years, he came to an unknown town just to change his mood, but he met Cheng Hao, a seemingly optimistic and cheerful man. In the following days of communication, both of them discovered the unknown pain behind each other. The two lonely people warmly comforted each other under similar backgrounds. Under the influence of Cheng Hao, Li Meng gradually changed his mentality and plucked up the courage to return to the original place and start over. However, Cheng Hao was not just an affair, at least in Li Meng's mind, it was different. When Cheng Hao returned to Li Meng's world for the second time, it brought endless helplessness...