Shingo is planning the film "A Story of Two Worlds" starring Megumi. Yuu's transformation into Creamy Mami is happening without her wanting it. She is asked to star in the film too. But the magic doesn't last...

Five years ago, a mysterious phenomenon known as the Global Synchronic Urban Disappearance caused a large chunk of Ikebukuro to disappear overnight. Following the catastrophe, the inhabitants found themselves thrown into a state of disorder, and unexplained electromagnetic anomalies called "Auroras" began to be sighted. Awed by the performance of idol Izumi Hinazaki at a play utilizing the "Super Material Theater," a stage designed to revitalize Ikebukuro through hologram-enhanced plays, high school student Seria Morino is inspired to become an idol. Shortly afterward, she is scouted by a young woman named Kaoru Sakakibara, who turns out to be the director of Alice in Theater—the troupe that Izumi used to be a part of. Aiming to pursue her dreams, Seria decides to follow Kaoru and joins Alice in Theater. Upon arriving at their establishment, she is cordially welcomed by a group of young and friendly girls who are all very passionate about acting. However, something seems to be amiss…

The first 45 minutes is a recap of the original series and the remaining 40 minutes has a new story. Two months after Creamy Mami's final concert, rumors began to spread that Mami was making a come back, and if that wasn't surprising enough, Tachibana starts a "Project M" and that seems to have something to do with Mami's come back. As word of Mami's concert reaches the public, Yuu dosen't belive it. Yuu, Megumi, Toshio, Midori, Kidokoro make a plan to get to the bottom of it.

Buried within the numerous clubs at Nijigasaki High School lies the school idol club. The club, while lacking popularity, definitely does not lack potential. During their debut performance, they were able to seize a sizable audience, along with the attention of their schoolmates Ayumu Uehara and Yuu Takasaki. Enamored, the duo makes their way to join the club; however, they are disappointed to find out that the club had just been disbanded. Nevertheless, Ayumu does not believe that it should have ended there. Together with Yuu, they begin restoring the school idol club, hoping to recreate the idol performances that dazzled them before. Love Live! Nijigasaki Gakuen School Idol Doukoukai shines its spotlight over the reformed school idol club as they recruit both former members of the club alongside newcomers. Taking the first step toward their dreams, how will these girls achieve idol stardom?