It tells the story of the protagonist Qiming's thoughts on love and friendship, and his growing confusion about society, which become more and more profound as he goes from the first year of high school to the first year of college. Zhang Wen, who liked him in the second year of high school, left him, and Zhou Xin, who had liked him for three years in junior high school, reunited in college, but it was as short-lived as a flash in the pan; the person you love most is not suitable to marry, but is suitable to miss.