Takanashi Tsumugi is tasked with managing Takanashi Productions' newest idol group, IDOLiSH7. After meeting the seven candidates, she's instructed to hold an audition and reject four of them. How will she decide who to keep and who to cut?

It's time for IDOLiSH7's first concert. Confident in her abilities to promote such a promising and talented group, Tsumugi ambitiously reserves a large outdoor venue for the event. Will they be able to fill all three thousand seats?

After their disatrous first concert, Iori approaches Tsumigi with some ideas for the future of the group. Meanwhile, the boys move into their dorm and begin to learn more about each other.