Description：In the mysterious and humid subtropical countryside of Qiandongnan, Guizhou, in the foggy clinic of Kaili County, two doctors are living like ghosts with heavy hearts. In order to fulfill his mother's last wish, Chen Sheng boarded the train to find his brother's abandoned child; and another lonely old woman asked him to bring a photo, a shirt, and a cassette to her seriously ill old lover. On the way to Zhenyuan County, Chen Sheng (played by Chen Yongzhong) came to a place called Dangmai, where time is not linear, and people's lives complement and dissolve each other. He seemed to have experienced the past, present and future, and rethought his life. In the end, Chen Sheng arrived in Zhenyuan, but just looked at the child from a distance with a telescope. He gave the old woman's keepsake to her old lover's son. He boarded the train again alone. I can't tell whether this world is my memory, or I am a part of this world.