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.

It's the day of the TRIGGER concert, and all the boys are excited. However, Yamato, Nagi, and Tamaki are late. As they rush to meet the others at the stadium, they run into someone unexpected...