The whole school knows that the transfer student Tan Wan is the substitute of Bai Yueguang, the school's primary school partner. He made her according to Bai Yueguang's preferences, even calling her "Li Li" with sincerity. Tan Man cooperated with the performance until he asked her with red eyes: "Don't you have any preferences of your own?" She smiled and held the arm of the second male lead: "Yes, Jiang Yu." Later, they discovered an old photo hidden in her textbook - the girl nestling next to the male protagonist in it was clearly her fifteen-year-old self. The substitute he abandoned like worn shoes turned out to be his first heartbeat that he had forgotten in the years.