Aira Harune, a clumsy yet happy-go-lucky girl, is suddenly dragged into the popular world of Prism Shows—an idol show based on figure skating, where performers called "Prism Stars" wear outfits encased in Prism Stones and perform stylistic Prism Jumps. Captivated by the dazzling fashion and gorgeous Prism Jumps, Aira decides to become a Prism Star herself. She soon encounters the hot-headed Rizumu "Rhythm" Amamiya, who desires to perform the legendary Prism Jump “Aurora Rising”; as well as the prideful Mion Takamine, who dreams of becoming the brightest Prism Star above the rest. The journey of these girls is marked by friendship, growth, and unexpected encounters. Can they perform Prism Jumps high enough to reach their dreams and become the next Prism Queens?

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. Sensing her potential, the Prism Show agency Pretty Top recruits Mia alongside three other aspiring Prism Stars—Karin Shijimi, Reina Miyama, and Ayami Ooruri—to form an idol group, Prizmmy. But the road to stardom is not easy: Mia has to deal with an old friend's unexpected appearance, this time as her rival, as well as navigate her way through the alluring yet conniving world of Prism Shows. Nevertheless, with her friends and team by her side, Mia is all the more fired up to march forward and carve the future for herself.

Naru Ayase is an 8th grader who can see the colors of music when she listens to it. For Naru, who is extremely good at decorating, becoming the owner of a shop like Dear Crown was her dream. One day, she finds out that the manager of a newly-opened shop is recruiting middle school girls who can do Prism Dance, and immediately applies. Naru begins to Prism Dance at the audition, and an aura she's never experienced spreads out in front of her. At that moment, a mysterious girl named Rinne asks her if she can see "rainbow music."

This is the fourth anime series of Pretty Rhythm. The story features a girl named Laala Manaka, who desires to become an Idol. To further her debut the best, the three main protagonists from the previous Pretty Rhythm series Aira, Mia, and Naru give her lessons about how to be the best Idol. In addition to the lessons she's learning, the series also retells the events of the previous Pretty Rhythm series.