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 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!

Poppin' Party gets another chance to play at Space. Will they finally impress the owner?