关键词:二十一中照片二十一中学学生图片二十一中又垫底二十一中的校服图片A high school girl's secret of hiding her long hair is discovered by her teacher, and she must cut it off according to school regulations. Her dream of dancing is trapped by reality. Is it better to return to the prison-like school and follow the routine, or to stand up and rebel? She is forced to make a choice that night.