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 begins to struggle in school and enlists Saya's help. Meanwhile, Arisa has been searching for the perfect band name.

Kasumi has a tall order in convincing Saya to join Poppin Party, is she able to do it? Meanwhile, they continue to get ready for the Culture Festival!

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?