The girls have all landed in the Idol Dimension. This is the home of super-idol Yuri. Her popularity becme so widespread that everyone wanted to be her. This wish was so strong, every living being in the Idol Dimension physically transformed in to Yuri. Mimu and the Excellent Idols must once again save the universe with their unbound stage skills. If they can't prove to the masses that Yuri isn't the only idol out there, everyone will trun into the beloved singer!