Uzuki Shimamura is an ordinary girl who dreams of being an idol, so she goes to a special training school. One day, a producer for 346 Production shows up with the news that she’s one of three girls chosen for the Cinderella Project, even though she didn’t pass the audition the first time around. Uzuki is thrilled, but the project can’t start until the other two members are picked... The producer scouts Rin Shibuya, who he has in mind for the second opening. However, Rin isn’t interested in becoming an idol and turns him down flat...

The summer fest is here at last. All of the project members are nervous about performing on the grand stage, but their rehearsals go smoothly thanks to Minami's leadership. But then Minami collapses from accumulated stress. Ranko does an emergency fill in for Minami with Love Laika and somehow, the rest of the Cinderella Project's performances go off without a hitch... until a sudden downpour causes the rest of the concert to be canceled!

The fall fest held by 346 Production has begun at last. The Cinderella Project idols are each determined in their own way and fired up as they face the concert. Per Producer's decision, New Generations is sitting the concert out, but Mio and Uzuki are on hand as staff to support the others, while Rin performs with Karen and Nao to make their concert debut as Triad Primus.

Meanwhile, Anastasia performs solo for the first time on stage and all the other Cinderella Project idols shine more than ever. On the other hand, it's the first time for the Project Krone idols to be on stage. Their nervousness reaches its peak right as they're about to go on...