On a school day, where a class gives flowers to their teacher, Tomoko Takahashi, who is heading on maternity leave, a boy named Atsuhiro "Wien" Maeda transfers into the class and is guided around the school by badminton player Taichi Tanaka. Meanwhile, a girl named Konatsu Miyamoto quits the choir club after becoming tired of not being able to sing and aspires to create a new choir club, of which she'll need five members. After managing to convince her best friend, Sawa Okita, to join and forcing her brother to apply as well, Konatsu tries to convince her other friend Wakana Sakai to join, but she doesn't want to sing for personal reasons. As Konatsu goes into town to practice her singing, her voice brings Wakana, Sawa, Taichi and Wien together to the same point.