One day, as she’s still adjusting to her new high school, Kasumi Toyama discovers a trail of stars that leads her to an old thrift store. Inside, she makes a discovery.

Kasumi's heart is set on forming a band, but Arisa wants nothing do with it. In fact, Arisa is so determined to avoid her that she puts the star-shaped guitar up for auction.

Kasumi, Tae, and friends are preparing for their first performance. Are they going to be ready in time?

The Cultural Festival preparations are done, and it is time for it to begin. Meanwhile, Poppin' Party play their first show! How does it go?

Poppin' Party auditions at Space but to play there you must impress the owner. Do they achieve their dream?

Kasumi is still struggling to find her voice but the rest of Poppin' Party is there to help pick her up.

Kasumi finally achieves her dream as Poppin' Party plays at Space's last show. How will they perform?