A new school year begins for the member of the Light Music Club. It's the last year for Akiyama Mio, Hirasawa Yui, Kotobuki Tsumugi and Tainaka Ritsu and they discover with cheerfulness that they are in the same class. Nakano Azusa, the younger member, enters in the second year. The problem is that the founders of the club will graduate at the end of the year leaving Azusa on her own. That's why they will try to recruit new members and enjoy their daily lives at the Light Music Club.