At an elite, old-fashioned boarding school in New England, a passionate English teacher inspires his students to rebel against convention and seize the potential of every day, courting the disdain of the stern headmaster.

An introverted young girl falls in love with a popular senior. However, as she begins to come out of her shell, she faces several new problems.

A story of a high school boy as he processes the loss of his first love and learns to experience high school over again. For 3 years of high school, JU Ran has silently had a love for a young girl in his class. At the end of his senior year, as the college entrance examination looms overhead, JU Ran's situation changes, and he is given the chance to repeat his senior year. Through this year, he studies again for the examination, and has a second chance at his high school experience. JU Ran's tale is that of growing up, and a caution to take joy in every moment, because even second chances are not perfect.

Pittsburgh, Pennsylvania, 1991. High school freshman Charlie is a wallflower, always watching life from the sidelines, until two senior students, Sam and her stepbrother Patrick, become his mentors, helping him discover the joys of friendship, music and love.

在静冈县三岛市，分别矗立着三所高中，分别是名校骏豆西高中、吊车尾云集的驹形大学附属三岛高中和全女子教会学校圣三岛女子学院。因当年礼拜堂火灾引发的事件，比邻而居的东高和三女互相仇视，不可调和。债台高筑的三女面临破产的命运，于是关于三女和佛教的东高合并的传言甚嚣尘上。在东高任教的原平助（锦户亮 饰）结合学生时代的经历，提出了设立男女实验班的设想，虽然两校负责人都对此不太感冒，但抱着不妨一试的态度还是通过了这个企划。在此之后，平助与有着暗黑之虎之称的三女生活指导老师蜂矢理沙（满岛光 饰）带着各自的学生来到了对方的阵营。
原本仇视敌对的男生女生，由此将上演一连串有趣而又感人的小故事……