Missing made Fang Yi have a mental breakdown. A year before he ended his life, he decided to write down his memories with Li Sitong, find her elementary school classmates to learn about her past, and her colleagues to learn about the years when he was not involved. After learning that the heroine Li Sitong did not die of illness, but committed suicide, he tried his best to calm himself down and asked her relatives and friends why they hid it from him. It turned out that it was Li Sitong's instructions before her death. At the end of the incident, Fang Yi and Li Sitong's family finally saw her last relics, which were a notebook and two letters. The notebooks recorded things that the heroine had always wanted to do but had never done. The hero later realized her wishes one by one, except for the first wish "to be with Fang Yi" that would not come true. Three days later, the hero was found to have committed suicide in the house where he had fantasized about marrying Li Sitong.
Concept: There is always someone you can love until death