Fifth grader Laala Manaka wants to be an idol, and her debut is coming up soon. To prepare her, Aira, Mia and Naru, the leads of earlier Pretty Rhythm series, teach her what being an idol really means. Alongside Laala's lessons, the 11 episodes revisit standout moments from Aurora Dream, Dear My Future and Rainbow Live as Laala and her mentors look back on their past Prism Shows. The result is a music and sports series that doubles as a franchise highlight reel.