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Soon after their live concert with all 13 members, 765 Pro's all-star idols are given great news: They will be performing a concert at an arena, and will have back-up dancers sent from the idol training school to support them. In the midst of this, the always cheerful Haruka Amami is voted as leader of the idols. Everything was looking up for 765 Pro, until bad news begins to strike. In the face of new barriers, Haruka wavers on her position as leader. However, she must stand up, and gather all the idols together once again for the greatest concert they've ever performed.
After appearing in the Prism King Cup representing Edel Rose, and getting a glimpse of what it was like to a be a future Prism Star, Ichijo Shin entered Kakyoin Academy’s High School division in spring and became a first-year high school student. Koji, Hiro, and Kazuki from Over The Rainbow left Edel Rose and established a new agency. Meanwhile, after having the title of Prism King stolen by Hiro, the leader of Schwarz Rose, Norizuki Jin, proposes PRISM.1, which would decide a new king other than Prism King. He then announces that Schwarz Rose and Edel Rose will be competing with each other.