Angel, a time traveler loses her disguised space-time passport and gets trapped, reliving June 8 repeatedly. While searching for her passport, she experiences campus life, falls for Su Xiaoming, and transforms her personality.

It is a film directed by Wu Qin.The film is about the trials and tribulations of adolescence.Angel, who smuggles from future 71Y2 back to 20X7, disguises her space-time passport as a 2B pencil. But she loses it accidently and is locked in a summer exam campus in 20X7. Time from 8:45 to 18:45 of June 8 is compulsively repeated. Angel has only 30 days to look for her space-time passport so as to unlock herself. During the process of looking for the pencil (space-time passport), she experiences the "ancient" campus life, falling in love with Su Xiaoming, which changes her lonely, indifferent and self-centered personality. With help of Su Xiaoming, Wang Zipeng, Qian Sen, Ma Gang, Lin Xiaolu, Angel finds her pencil which is picked up by Yang Tao. To take the pencil, Su Xiaoming is in jeopardy of life and death...