It is three years after the legendary Prism Queen Cup, and Aira Harune, Rizumu Amamiya, and Mion Takamine have become famed Prism Stars, spreading the glamor and radiance of Prism Shows wherever they perform. However, they encounter an unexpected challenge from a passionate and lively girl, Mia Ageha, who has publicly declared her intent to defeat Aira and become the greatest Prism Star.