Gu Xiaoxi and Lu Manman, who had been classmates since elementary school, entered junior high school together. On the second day of school, Lu Manman introduced her classmate Lin Muchen to Gu Xiaoxi and asked Gu Xiaoxi to have a crush on Lin Muchen with her. After graduating from the third grade of junior high school, Gu Xiaoxi began to slowly forget about this pure first love. Three years later, Gu Xiaoxi attended a reunion of her junior high school classmates, and she met Lin Muchen, her crush for three years in junior high school...