Mit Machi im Team plant der Yosakoi-Club der Yuihama-Mittelschule nun ein Trainingscamp in Vorbereitung auf das Hanairo-Yosakoi-Festival. Das Ziel sind ist eine heiße Quelle in Hakone. Doch Machi steht unter Druck, da sie das Training, das die anderen ihr voraushaben, nachholen muss.
Machi decides to join the yosakoi club, determined to help the group get into shape before the Hanairo Festival. Tami proposes they go on a training camp at her family's hot spring inn, so the group discuss their plans at Hana's house, where they learn she lives with her father after her parents got divorced. After everyone works to update their choreography and routines to include Machi, the girls head to the inn and get straight to practising. Later that night, the girls suddenly learn they've missed the registration date for the festival. Nonetheless, Machi is still determined to spend every waking minute practising so she can catch up with the others, encouraging the others to practise alongside her. Their practise soon attracts the attention of the other inn guests, who give the girls their support. The next day, Sally informs the girls that Masaru has managed to get them into the festival thanks to a team dropping out. Back at school, as Naru manages to come up with a theme for their outfits, Hana gets a call from her mother.
マチの入部で5人になった由比浜学園中学よさこい部は、花彩よさこい祭に備えて箱根で温泉合宿をすることに。はしゃぐハナ達とは対照的に、入部からまだ日の浅いマチは、遅れを取り戻そうとハードな練習を強要してしまい…？よさこい部の合宿は楽しいだけでは終わらない！？
얼마 남지 않은 하나이로 요사코이 축제에 맞춰 온천 합숙을 가기로 한 멤버들. 그러나 자존심이 센 마치는 계속 멤버들과 갈등을 일으키는데...
Las chicas del Club de Yosakoi deciden hacer un viaje de entrenamiento antes del festival Hanairo. Deben perfeccionar la coreografía, terminar la música, arreglar los atuendos... Pero parece que no contaban con el nuevo miembro del grupo.
