Fang Shu and Li Mo were classmates in high school. They were both withdrawn and difficult to deal with, but they became good friends. Li Mo loved to take care of people since childhood due to family reasons, but he also became mature and sensible because of his independence. Fang Shu was a spoiled and hypocritical girl, so they became good friends and the two spent the whole day together. But because of a beautiful misunderstanding, Li Mo's family suffered changes and suddenly disappeared. Fang Shu finished high school and college with guilt and grievance. Will they meet in the future? Will Fang Shu find out the reason why Li Mo disappeared? What kind of life will everyone live in the future...