On the night of a full moon, typical second-year middle school student Naru Sekiya has an encounter with Hana, a blonde girl dressed in a kimono. That was Naru's first exposure to the extraordinary world of yosakoi dance. Hesitant, but wanting to be spectacular, Naru takes her first steps towards something new.

Naru and Hana discuss how they can get their school interested in yosakoi. Their classmate Yaya isn't too happy about Naru and Hana becoming so close. A little mistake becomes the beginning of a fight between Naru and Yaya, but...

The club prepares for the Hanairo Yosakoi festival: logos, costumes, choreography, music. Meanwhile, Hana discovers a gig at the department store. They plan for the club to perform, but Sally-sensei makes two demands in exchange for permission for the out-of-school activity...

The Hanairo Yosakoi Festival is finally here. It was Naru that gave everyone encouragement after Hannah's departure. Naru visits the place where she first met Hana. And once again, Hana runs through the town hoping to dance with everyone again. The girls have a new summer memory. Cute and energetic, HaNaYaMaTa!