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...

Scandalous and malicious articles about IDOLiSH7 begin popping up more and more in tabloids. Unsure of what is true and what isn't, the members begin turning on each other. Amidst rising tensions, Tamaki is asked to appear on a TV special featuring his emotional reunion with his family, but...

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...

IDOLiSH7 achieves their long-held dream of having their own namesake show, and the members feel like celebrating. President Takanashi explains that Mitsuki's talent for MCing that he's been displaying on variety programs was big for the group. Mitsuki cries tears of joy over the recognition he has received. The group begins planning more jobs to promote their show, and they are soon invited onto the show of top idols Re:vale. It will be their first real appearance with their seniors Re:vale. The members wait anxiously in their greenroom, but when Momo and Yuki arrive...?!

Yuki declares that he'll recommend IDOLiSH7 for the currently undecided performance slot at the Zero Arena inaugural concert. Zero Arena's general manager is scheduled to come to their next concert, so Tsumugi, who is in charge of the group's stage production, heads to Zero Arena to gather ideas. There she encounters a gentleman who claims to have worked in stage production in the past. Tsumugi's heart is moved by the way he describes his feelings towards idols standing onstage. His hints help her finish the set, and the concert begins!

Though the concert ended without incident, Riku was unable to perform in the encore due to an asthma attack. Fortunately, it doesn't affect the Zero Arena general manager's opinion of the concert, and IDOLiSH7 is officially offered an appearance at the inaugural concert. Mitsuki and Nagi are delighted, but there are reservations about whether or not the sickly Riku can continue acting as the center. Riku tries to act tough after his recovery, making Tsumugi wonder how to approach the situation. Meanwhile, she discusses a major decision with Iori.

Given Riku's unstable condition, Iori takes over as IDOLiSH7's center. The newly reborn IDOLiSH7 gets off to a solid start, both their first namesake show "Lovely Night With You!" and Mitsuki's MCing are well received, and the group's popularity grows.

Tenn pays a sudden visit to the IDOLiSH7 dorms. Riku is simultaneously perplexed and delighted, but Tenn has harsh words for him. Later, Yuki, Momo, and Ryunosuke arrive. With members of IDOLiSH7, TRIGGER, and Re:vale at the dorms, the situation gets out of control...?!

Re:vale brings a new offer to the table: for IDOLiSH7 and TRIGGER to appear as surprise guests at Re:vale's fifth anniversary Zero Arena inaugural concert, and for the two groups to perform together as one special group.

Mitsuki is traumatized when he happens to overhear some fans talking about him. Riku is criticized on social media by Iori's fans and begins behaving awkwardly towards him. Though Sougo is worried about the situation, he has his own concerns regarding Tamaki...

While taping a music program, Momo suddenly loses the ability to sing. Unable to determine the cause, the posters for the inaugural concert are vandalized, and uneasiness hangs in the air. Meanwhile, Tsumugi decides to convey her own feelings in an attempt to cheer up Riku and the other members, who have been feeling down.

IDOLiSH7 and TRIGGER begin practicing as a special unit for Re:vale's 5th anniversary concert. While many of the members are off their game, Gaku, Tenn, and Ryunosuke discuss their thoughts, and the individual groups begin to open up to each other.

Momo remains unable to sing. He recounts Re:vale's history to the concerned members of IDOLiSH7. As an indie artist, Yuki worked with a different partner, and Momo was one of their fans.

Graffiti is written on posters for the inaugural concert. The rumor that the missing legendary idol Zero is responsible spreads. Meanwhile, IDOLiSH7 will release a new song with their second album, and Riku will return to the center position.

IDOLiSH7 is accused of appropriating Zero's songs, so Takanashi Production holds a press conference. Nagi volunteers to face the press and explains that he was officially given the rights to the song by composer Haruki Sakura. However, a suspicious man dressed as Zero appears at the press conference, aggravating the scandal.

Filming for the drama Tamaki and Sougo are co-starring in is going well. However, Sougo continues to worry about his encounter with Tamaki's younger sister, which he hasn't been able to tell anyone about. On the final day of the special unit's joint practice, Tamaki is shocked to discover that Sougo couldn't trust him enough to tell him about Aya.

Tamaki and Aya are finally reunited. Tamaki wants the two of them to live together, but Aya informs him that she wants to remain with her new father who has been taking care of her. A surprising figure appears before the dumbfounded group. When they learn of his ambition, IDOLiSH7's feelings are united--

Re:vale prepare to close out the inaugural concert. The IDOLiSH7 and Trigger shuffle units perform the opening act. While watching their juniors perform, Momo and Yuki look back on the past five years they've walked together.

IDOLiSH7 is set to hold a debut anniversary tour. Along with TRIGGER and Re:vale, all three groups are attracting a lot of attention in the idol industry. Their members attend the Akebono TV 50th anniversary party.

Mitsuki and Nagi learn that Yamato has a secret based on his behavior at the party. Rather than being troubled by the secret itself, Nagi can't accept that Yamato is closing himself off from his friends. Yamato himself encounters his first acting wall at the filming location of his movie...

An argument leads Mitsuki, Yamato, and Iori to leave the dorm. Iori and Mitsuki stay at Momo's place, while Yamato stays at Yuki's. Riku and the other boys left at the dorm feel increasingly sad to see their groupmates scattered.

All seven members of IDOLiSH7 meet for the first time in a while at the studio. The recording session goes smoothly, but the other members anxiously watch the exchange between Mitsuki and Yamato. Sougo attempts to convince them to come back to the dorm, but when they refuse, he is at a loss.

Momo gets caught up in Ryo's scheme to expose Yamato's father Shizuo Chiba. When Yamato returns to the dorm, a delighted Nagi tells everyone that Yamato's first confession will be held that night, and the members of TRIGGER and Re:vale gather at the dorm.

The members of IDOLiSH7 cheerfully head to work. Sougo encounters Torao at the TV station. As sons whose families run major corporations, they've previously met. Meanwhile, at Iori and Tamaki's school, transfer student Haruka Isumi takes a confrontational attitude towards them.

Banri describes how he and Yuki met to the members of IDOLiSH7 and Tsumugi. During high school, they developed an interest in each other's songs, and eventually began making music together. Yuki named the band they started together "Re:vale."

Moved by Re:vale's concert, Momo writes a fan letter describing how "Our Incomplete Selves" made him feel. Banri and Yuki are touched by the letter, which encourages them to continue making music. Five years after the formation of their band, they're approached by a man named Kujo who offers to help them debut.

IDOLiSH7 are selected to be personalities for the 24-hour program "Friends Day" along with Re:vale and TRIGGER. On the day of the production meeting, their 24-hour training camp to write a theme song for the program suddenly begins.

With Re:vale composing the music, TRIGGER designing the choreography, and IDOLiSH7 designing costumes, through the combined efforts of all three groups, they barely manage to complete a song by the morning of their 24-hour theme song production training camp. Meanwhile, Ryo meets with Haruka, Toma, Minami, and Torao in his apartment.

Thorvaldur, a man claiming to be "Nagi's otaku friend," visits the dorm. He says he's worried about the dorm's security, but Riku and the other members fail to understand his true intentions. Meanwhile, media outlets report that Ryunosuke and popular singer Sumire Hanamaki are madly in love.

In order to prove Ryunosuke's innocence, Mitsuki, Nagi, and Gaku go to negotiate directly with Ryo. Yamato and Tenn attempt to persuade Sumire, but they fail to change her mind. Anesagi anxiously tells Tsumugi and Okazaki that she's concerned there's still more to come...

ŹOOĻ makes a spectacular debut and has taken the spotlight. Meanwhile, TRIGGER's popularity is beginning to decline due to Ryunosuke's scandal. As the disquieting atmosphere unfolds, TRIGGER shows off their powerful singing and dancing on TV, but...

TRIGGER goes missing when they're scheduled to perform at the Tokyo International Music Art Festival, so IDOLiSH7 and Re:vale work together to look for them. Ryunosuke is rescued sooner than the others thanks to Nagi's quick wits and rushes to Zero Arena, but...

IDOLiSH7 and Re:vale watch on as TRIGGER check in on each other. Tenn informs Nagi that Kujo Takamasa received a living will from Sakura Haruki. Nagi is shaken by the possible clue to finding the man he's been looking for...

Sosuke decides to dissolve TRIGGER's contracts in order to protect Yaotome Agency. However, he allows them to continue calling themselves TRIGGER and sing their existing songs. With that in mind, Tenn and the others continue working independently and pledge to one another that they will aim to return to Zero Arena someday.

IDOLiSH7 and Re:vale begin receiving different types of jobs than they had been previously. They are obviously filling in for TRIGGER. Meanwhile, ŹOOĻ is taking on more and more work, and their popularity is skyrocketing. They even appear as guests on IDOLiSH7's show "Lovely Night With You!".