"Pretty Rhythm All Star Selection" is a compilation series that revisits key moments from the "Pretty Rhythm" franchise, specifically focusing on the first three seasons: "Pretty Rhythm: Aurora Dream," "Pretty Rhythm: Dear My Future," and "Pretty Rhythm: Rainbow Live." The series serves as a highlight reel, showcasing pivotal episodes and story arcs that define the overarching narrative of the franchise. It emphasizes the interconnected themes of friendship, perseverance, and self-discovery through the lens of competitive Prism Shows, a performance art combining dance, fashion, and skating.

The narrative begins with "Aurora Dream," where Aira Harune, a shy and clumsy girl, discovers her passion for Prism Shows after encountering the legendary Prism Star, Kaname. Alongside her friends Rizumu Amamiya and Mion Takamine, Aira trains to become a top Prism Star, overcoming personal insecurities and rivalries. The trio’s journey highlights their growth as performers and individuals, culminating in their participation in the prestigious Prism Queen Cup.

"Dear My Future" shifts focus to Mia Ageha, a former child star seeking to reclaim her place in the entertainment world. Alongside her friends Aira and Rizumu, Mia navigates the challenges of balancing her personal life with her ambitions. The season introduces new characters like Naru Ayase, a talented but reserved girl, and explores deeper themes of identity and legacy. The narrative builds toward the Prism Stone Cup, where the characters confront their fears and aspirations.

"Rainbow Live" introduces a new generation of Prism Stars, led by Naru Ayase, Bell Renjouji, and Wakana Morizono. This season delves into the concept of Prism Music, a fusion of Prism Shows and musical performances. The trio forms the unit MARs, aiming to bring joy to audiences through their unique style. The story explores their struggles with self-doubt, rivalry, and the pressure of living up to expectations, culminating in their participation in the Prism Music Grand Prix.

"Pretty Rhythm All Star Selection" weaves together these narratives, emphasizing the continuity and evolution of the franchise. It highlights the recurring motifs of teamwork, personal growth, and the transformative power of performance art. The series serves as both a recap for longtime fans and an accessible entry point for newcomers, offering a condensed yet comprehensive overview of the "Pretty Rhythm" universe.