Working at an agency owned by your father, seven new idols await. They are all part of an idol unit IDOLiSH7, and each of them have unique personalities. It is your task to manage them. In order to achieve the same goals, as manager and idols together, you gather the seven ununified hearts and aim for the top.
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.
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...
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.
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.
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!
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...?!
The members of IDOLiSH7 cheerfully head to work. Sogo 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 Isumi Haruka takes a confrontational attitude towards them.
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.
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."
Momo gets caught up in Ryo's scheme to expose Yamato's father Chiba Shizuo. 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.
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. Sogo attempts to convince them to come back to the dorm, but when they refuse, he is at a loss.
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.
IDOLiSH7 decided to enter the dormitory of the Kotori Yu office and live a communal life in preparation for full-scale idol activities. Ichiori, who volunteered to cooperate with Spinning, proposes to decide on a center that will be involved in the future route of the group. Spinning imagined "an idol who is loved by everyone and gives dreams and hopes." There was only one answer as to who was the best fit for the concept. IDOLiSH7, whose direction has been decided in this way, first begins live activities on the street.
"" Formed after audition IDOLiSH7". First of all, the goal is to raise the name by repeating live performances, and Spinning immediately plans a live performance. The venue was the open-air concert hall, which can accommodate about 3,000 people. I'm surprised at the size of the scale, but it's an important first live for the members. Seeing the official website and the appearance of spinning working hard to make a flyer for promotion, everyone helps with promotion between lessons. And finally, the day of the concert will come ...
Kotori Yubo, who joined the "Kotori Yu Office" run by his father, will be in charge of the manager of the idol group before his debut. Seven people were introduced there: Izumi Izumi, Yamato Nikaido, March Izumi, Tamaki Yotsuba, Sogo Osaka, Nagi Rokuya, and Riku Nanase. Each of them has a unique charm, and they have a mysterious charm that makes them want to support them. However, at the president's order, only three people can make their debut ... An audition will be held to select the member.
Sogo finally collapsed due to stress. Tamaki apologizes for his burden, but says that Sogo may quit IDOLiSH7 and MEZZO, because of the complex relationship between Sogo and his father. IDOLiSH7 reunited their feelings by overcoming the difficulties together. Later, when he learned that TRIGGER's music had recommended him when he appeared in "Music Festa," he visited the dressing room to thank him. Heaven meets there and entrusts Spin with a message to the land.
Although they made their long-desired debut as IDOLiSH7, Riku and his friends have mixed feelings about the whereabouts of their debut song. However, the regular title program was decided, and the seven people regained their feelings and started the album tour. Tamaki and Sogo manage an overcrowded schedule that balances MEZZO ”and IDOLiSH7 work, but Sogo, who also serves as a follower of Tamaki, gradually gets tired. The crown program is returned to a blank slate.
Tamaki and Sogo continue to play an active role as "MEZZO". On the other hand, IDOLiSH7 will start the online distribution program "Kimi to Ai Drish" as a place for new activities. The appearance of the seven people showing the exchange gradually attracts attention. At that time, Yamato is offered to appear in a drama, but Yamato is not enthusiastic at all. Even if Spin asks why he avoids drama work, Yamato lightly dodged ──
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 Sakura Haruki. However, a suspicious man dressed as Zero appears at the press conference, aggravating the scandal.
IDOLiSH7, whose debut has been officially decided, will visit Okinawa to shoot the PV of their debut song. At the hotel he is staying at, he happens to encounter TRIGGER, and Riku tries to call out to heaven, but he ignores heaven and leaves. On the other hand, the staff of the program that appeared under Tamaki and Sogo, who are in charge of the work of IDOLiSH7 and MEZZO ″, propose a project in Tamaki. An unexpected incident happened at the Kotori Yu office ...
Sosuke Yaotome, who is trying to pull out the rising popularity of Tamaki and Sogo, has taken advantage of the weaknesses of Tamaki who hastened his debut and invited them. After learning about the circumstances of Tamaki, Riku and his friends talk directly to President Kotori Yu so that he can make his debut as IDOLiSH7. However, the president's decision is to make a debut with only Tamaki and Sogo, who were targeted by Yaotome, based on the possibility that all seven of them will make their debut in the future. At that time, IDOLiSH7 receives a request to appear in the music program "Music Festa".
IDOLiSH7 and others who were inspired by TRIGGER's live and danced outside the venue. Yamato and Spin visit the Yaotome office to apologize, where they meet Heaven. Meanwhile, IDOLiSH7, who has resumed activities, begins a new song lesson. While the members are worried about Riku, who will soon be out of breath, Ichiori notices a change in Riku. On the day of the announcement of the new song, which was greeted with anxiety, IDOLiSH7 will perform a live concert for those who are stuck at the station although it was raining heavily at the live venue.
IDOLiSH7 will be suspended for a month before watching TRIGGER's live performance in order to raise awareness as an idol. As the enthusiasm for resuming activities gradually increased, Ichiori expected that TRIGGER's live performance would be a good stimulus for them. And on the day of the live. Nagi, Tamaki and Yamato, who are late for the meeting and run desperately, encounter an unexpected person on the way to the venue. Meanwhile, at the live venue, Riku was trying to reveal the secrets of Sogo and his friends.