When she was fifteen years old, Xiao Qi wrote in her notebook: Lin Yi, meeting you again is the most beautiful gift in my life. But there is always only one place in Ji Yi's heart, and that person's name is Zhou Fei, but in Xiao Qi's heart there is still that boy who seems to have stepped out of a Japanese comic.
A few years later, the secret of life experience is exposed. Can we go back to the past? Can the people who first loved each other hold hands until they grow old?