The transformation sequences are pure sugar-rush spectacle, but what makes them work is that every single one earns its excess through genuine character struggle. Shin's journey isn't about becoming perfect, it's about learning that the performance only matters because the people watching it matter. This is a movie that understands idol culture isn't vapid worship; it's collective dream-making, and it treats that with the kind of earnest reverence most shows reserve for war.

Shin Ichijou and seven other hopefuls enroll at the Edel Rose training school, aiming to become the next Prism Stars and perform in future Prism Shows. Their plans are threatened by a scheme from Jin Norizuki of the rival school Schwarz Rose. To protect Edel Rose, the trio Over The Rainbow suspends its activities indefinitely, and its three members part ways. Kōji travels to Hollywood to compose music for films so he can repay an enormous debt. Kazuki sets out to reconnect with his beginnings as a street-style performer. Hiro throws himself into special training to become better. Apart from one another, each of them has to face who he is as a Prism Star. The film combines music and sports elements in its story of idol performers.