A letter from a stranger, the recipient address was correct, but Luo Jinyu had never heard of the sender and recipient. In the summer of 2015, this strange letter connected the stories of Luo Jinyu and Liu Yizhi. The two strangers became bonded and became pen pals who talked about everything. However, Luo Jinyu was not the original recipient after all. Did the two part ways and become strangers, or did they continue to move forward.
Concept: Love is the attraction and collision deep in the soul