Tsumugi Takanashi 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.

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...

With the ban on singing and dancing lifted, the boys eagerly resume practicing and performing. However, something's not right with Riku. Iori soon discovers the nature of the secret he's been hiding, but Riku begs him not to tell the others.

IDOLiSH7 is set to hold its second concert in the open air arena where they first failed. With a local news station coming to cover the event, everyone is excited to put on the best performance possible. However, ominous clouds are on the horizon...

Sousuke Yaotome, president of Yaotome Productions, approaches Tamaki and Sougo with a tempting offer. Sougo brushes him off, but Tamaki can't seem to walk away from the deal. Is this the end of IDOLiSH7...?

IDOLiSH7 is asked to appear on the popular music program Music Festa. However, their exciting opportunity doesn't go exactly as planned. Will they be able to give the performance of their lives, or does disaster await?

Sougo Osaka and Tamaki Yotsuba 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...

Press conferences, an album tour, and even a TV show. Things are starting to look up for IDOLiSH7.

However, with their exhaustion finally catching up to them, the future doesn't look so sunny for MEZZO"...

While recovering in the hospital, Sougo reveals his past and reason for becoming an idol to the other members of IDOLiSH7.

Meanwhile, Tenn grows increasingly suspicious of the origins of TRIGGER's new song.

IDOLiSH7 is invited to perform on Sound Ship along with various other artists, including TRIGGER. Given TRIGGER's popularity, it's no surprise that most of the fans in the audience are here to see them. IDOLiSH7 puts on a great performance regardless, but Riku notices that TRIGGER still hasn't come to the stage...

As the boys reflect on their feelings towards being idols, they find themselves drawn to the same park, where they reaffirm their commitment to IDOLiSH7. Later, Nagi reveals the secret identity of the composer of IDOLiSH7's songs...

IDOLiSH7 wins the JIMA New Artist award, which means they'll compete against TRIGGER at Black or White! Their work has earned them the attention of Douglas Rootbank, a famous American pop-rock artist. While Iori and Tamaki wait for the others to show up for their group meeting, a strange looking maintenance employee shows up...