The story revolves around five Japanese high school students are too young to be called adults, but who do not want longer consider themselves children. Wakana Sakai when-it took music lessons, but she quit music after lost her mother. Konatsu Miyamoto optimistic girl who loves to sing, she spends time after school choir club. Sawa Okita, an energetic member of the club of archery, who dreams to become a rider. Tait Tanaka, always late member of the club badminton,who lives with her older sister, a college student. "Veen" has just transferred to the Vaca class, after 12 years of residence in Australia Music connects wakan, Konatsu, Sava and others together in the ensemble during their last summer in high school..