本片改编自同名漫画，讲述了高中教师原美铃一边隐瞒与好友美奈子的未婚夫早藤的关系，一边从讲台的高处俯视观察学生们，偷偷地满足自尊心。但是，假装平静的日常生活因为自己班上的男学生·新妻的事件而开始崩溃…
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