Xiang Yuan, who once unsuccessfully pursued Xu Yan Shi in school, reunites with him as an adult. While she works to save a company and he struggles to follow his dream of becoming a navigation engineer, they support each other through challenges and grow together.

Kim Young Joon is a philosophy major at a university. He confesses his feelings to a female classmate, but she rejects him. He takes her rejection hard. Kim Young Joon then meets a mysterious homeless man, Kim Deuk Hwan who lives under a small bridge. Kim Deuk Hwan has also experienced rejection in love and they develop a friendship.