A live house that Momoka used to play at asked the girls if they wanted to play a show, and they agree to have their first battle of the bands. As they struggle to meet the ticket sale quota, Momoka gets tickets to a show for her former band.

Nina and the others arrive at an outdoor music festival. It's a huge venue, and the large stage gets them pumped. Diamond Dust takes the stage and they've gotten better since their last show. Nina and the band absolutely cannot lose. They're going to leave their mark. It's the start of their performance of a lifetime.