Raki Kiseki, a middle schooler in her second year, is on a mission to become an idol at Star Harmony Academy. Her journey becomes intriguing when she receives an Aikatsu Pass, gifted by her engineer sister, which leads to doors opening to new Aikatsu idols including Yume Nijino from Aikatsu Stars! Driven by a strong resolve, Raki aims to create her own premium dress to showcase on stage during her performance.