戒律森严的寄宿黉舍里，蜜拉品学兼优，相较于其他正值青春期的同侪起头在意服装妆扮、对同性发生猎奇，她在老师眼里不但衣着得体、裙长及膝，还是学弟妹的模范榜样。父亲长期离家事情，母亲将心力全投注在她身上，蜜拉背负着所有人的期待，每天固守着「完善女孩」的框架，直到转学来的神秘天文社男孩闯入生活，情思涌动的她一步步探向被禁止的爱…

When a small town music teacher dealing with low self esteem and unforgiving social circumstances is compelled to give up all hopes of a reunion with a girl who once loved him, he tries to accept his fate with compromises, in every sphere of his existence. The girl is one of his estranged ex-students, who is now a sing…