Aira Harune, Rizumu Amamiya, and Mion Takamine have been recognized as renowned Prism Stars, captivating the audience with their Prism Shows for three years after the Prism Queen Cup. However, a spirited and ambitious newcomer named Mia Ageha emerges, determined to surpass Aira and earn the title of ultimate Prism Star. Realizing her potential, Pretty Top, the agency in charge of Prism Shows, invites Mia and three other aspiring Prism Stars, Karin Shijimi, Reina Miyama, and Ayami Ooruri, to form an idol group called Prizmmy. However, the path to success proves to be challenging, as Mia faces both a former friend turned rival and the ruthless world of Prism Shows. Despite the various obstacles in her path, Mia is resolute in creating a bright future for herself with the support of her team and friends. With an unwavering determination, she blazes ahead, ready to seize any opportunity that presents itself.