Su Luo and Li Yumu met in Weishi. They were attracted to each other and slowly got closer to each other, but they could not break through the last layer of paper. Due to a strange combination of circumstances, as they graduated and went their separate ways, the two of them carried the most sincere emotions in their hearts, which gradually cooled down and were hidden deep in their hearts. Su Luo wanted to get rid of this entanglement, so she chose to go to Japan as an exchange student in college. After graduation, she wanted to live in Japan permanently, but in the end she couldn't deceive her heart, and couldn't bear the torment of missing her and returned to the city where she was born and raised. Inevitably, he and Li Yumu met again. They still broke into each other's lives, cautiously approached each other, and continued the unfinished journey a few years ago...