Yui and Laala go to PriPara in Laala's hometown, Parajuku. Gaarmageddon finds Mechanee while trying to summon a demon and accidentally active her Self-Destruct, which will destroy Parajuku PripPara if the countdown reaches zero. Mechanee tells them they can stop the countdown if they charge her with Idol energy from performing. After witnessing a test of her destructive power all the idols begin performing in order to fill Mechanee with energy...