The idol group Music Girls is struggling mightily because, despite all of their efforts, they are still not well-known or well-liked among music enthusiasts. In order to maybe breathe new life into the group and hopefully help them finally reach the desired success, its producer Ikebashi advises the eleven-member team that they come on board a new member for Music Girls. For this reason, a casting call is held, where the group first meets Hanako Yamadaki, who will join them. Together, they work to realize their lofty goal and establish themselves as one of the top idol groups in the music business.
