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"...

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...

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.

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.

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.

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.