In a certain town, Lin Wan and Su Mo are childhood sweethearts. Since childhood, they have grown up together and experienced countless happy and sad times together. However, as they grew older, the relationship between the two quietly changed. Lin Wan gradually realized that her feelings for Su Mo had surpassed friendship, and she longed to be the only one for him. After graduating from high school, Lin Wan was admitted to a university in the provincial capital, while Su Mo stayed in the town to work. Despite being separated by two places, the two men remain closely connected. However, an unexpected misunderstanding caused a rift in the relationship between the two. Lin Wan overheard some gossip about Su Mo at a party, which made her suspicious and dissatisfied with Su Mo. In order to prove his innocence, Su Mo decided to confess everything to Lin Wan. It turned out that those rumors were deliberately created by him in order to protect Lin Wan. However, the misunderstanding has been created, and the relationship between the two has become strained. After an argument, the two broke up and went their separate ways. A few years later, Lin Wan had become a well-known writer, while Su Mo ran a bookstore in the town. One day, Lin Wan received a letter from Su Mo, which included a manuscript - it was a collection of poems written by Su Mo to her. Through this letter and a collection of poems, the two reconnect and begin to slowly repair their relationship with each other. Eventually, on a sunny day, the two are reunited in a café in the town. After years of separation and growth, they finally realized that true love is not only passion and romance, but also mutual understanding and support. Lin Wan expressed her heart to Su Mo, and Su Mo accepted her frankly. From then on, the two decided to spend the rest of their lives together, facing the challenges of the future together in each other's company. This story tells us to cherish the people in front of us and not to regret them until we lose them.