成濑顺(芳根京子 饰)曾经拥有一个幸福的家庭,然而因为她无心的一句话,爸爸妈妈离了婚。受到了巨大的打击,成濑顺从此将自己的内心紧紧的封闭了起来,再也不愿意和任何人说任何一句话。从小到大,成濑顺在班级里都属于异类,在升上了高中后,她意外的被班主任任命成为“地域沟通交流会”的实行委员。一个无法说出话语的孩子,要怎样担负这项重任呢? 和成濑顺一起被任命的,还有因为身体受伤而放弃了甲子园梦想的棒球部主将田崎大树、虽然活泼可爱但却总是受到感情问题困扰的拉拉队员仁藤菜月以及对生活毫无期待的废柴少年坂上拓实。Takumi is on his class' community outreach group. His teacher assigns more students to the group including a student who, due to a mishap, has foregone speaking. The class has to perform a musical, but volunteers brave enough to perform are hard to come by. The reluctance slowly begins to wash away when the aforementioned girl makes an effort to perform. As the day of the performance approaches will the students be able to overcome their reluctance and go for it?