Summary [AniDB]: The story centers around five Japanese high school students who are too young to be called adults, but who no longer think of themselves as children. [Sakai Wakana] once took music lessons, but she withdrew from music after losing her mother. [Miyamoto Konatsu] is a positive-thinking girl who loves singing and spends time after school at the vocal music club. [Okita Sawa] is a spirited archery club member who dreams of becoming a horse rider. [Tanaka Taichi] is a chronically late badminton team member who lives with his college student sister. [Wien] just transfered into Wakana`s class after 12 years abroad in Austria. Music brings Wakana, Konatsu, Sawa and the others together into an ensemble during their last summer in high school.
Konatsu Miyamoto was rejected to sing with the other members of her chorus club by the teacher because she was missing "something special". Being her last year in high school, she felt like doing something crazy: She quit. In the place of her former club, Konatsu comes up with the idea to make a new chorus club, inviting the people around her to join. With dreams in each of the member's hearts, they live out their high school lives.