Osaka Sogo and Yotsuba Tamaki are set to debut with Takanashi Productions as duo "MEZZO." But first, the group goes camping by the river, where they learn more about each other and strengthen their friendships.

IDOLiSH7 begins hosting a web show to promote themselves. Though the production is far from perfect, everyone seems to be enjoying it. Meanwhile, Yamato receives an offer to appear in a TV drama...

Having finally gained enough popularity, Otoharu decides it's time for IDOLiSH7 to debut. He sends them to Okinawa to film the promotional video for their debut single, but once they arrive, they discover TRIGGER is also there filming...