Anzu (Tomita Nanafu), who holds the C position in the high school idol club of Osaka Takizakura Girls' College, is working with the chiefs Misuzu (Ayasu Ayaka), Toa (Nakamura Yuuna), Rena (Saina), and Sayaka (Yamamoto Airi), practicing hard every day for the upcoming debut event.

On the other hand, at Tsubakisaki Hana Girls' High School in Hyogo Prefecture, Rurika (Miho Watanabe), who was full of admiration for Anzu, was unable to concentrate on her studies, and her grades plummeted.Her friends Yuzha (Nanami Asai), Yukino (Julia Anzu), Hikaru (Mizumi Yamauchi) and Maaya (Jugo Yura), who have known her since childhood, are very worried.At the same time, Anzu is also facing some kind of trouble...