The play tells the story of an ordinary girl Li Li fifteen years like a boy called Pei Shangxuan's story. Thirteen year old Li glass (sun). Shebeginstofall in entering junior high school on the first day came to the attention of the handsome and cynical youth Pei Shangxuan (Zhang Ruoyun act the role ofing), he is like a ray of sunshine warm Li glass of life. This of appearance is ordinary girls and handsome boys, between the deserving girls and reciprocal of achievement of boys destined to not be enviable Jiaoutiancheng. In the next fifteen years, Li glass is Pei Shangxuan life in the only constant friend, when he was disappointed in love, frustrated, even lose the freedom; Pei Shangxuan is Li glass only constant love, in her lonely, joy, even life dying moments. Every year at the age of fifteen, Li Li wishes are: this year is no longer love Pei Shangxuan. But this wish has never been achieved. In the view of Pei Shangxuan, Li glass is a friend no sex, he is willing to protect her, comfort her, just love the word and they have nothing to do, drip for fifteen years let all this has undergone a qualitative change, Shangxuan discovered that Li glass is an indispensable man in his life. Just at the moment of her love for him has been unable to continue, Shangxuan sad shouted: Li Li, next life, I want to love you.