During a childhood camping trip, Kasumi Toyama was enchanted by the celestial melody of the "Star Beat" under the night sky's brilliance. This magnetic rhythm left an indelible mark on her young heart, propelling her on a quest to rediscover its electrifying allure. Now a freshman at Hanasakigawa Girls' High School, Kasumi fervently pursues this elusive sensation. Despite dabbling in numerous school clubs and contemplating part-time work, none resonate with her inner spark. Serendipity strikes when she stumbles upon a star-shaped guitar in an antique shop's storage, leading her to a mesmerizing live performance at a music venue. In a surge of inspiration, she impulsively forms a band, driven by a mysterious yet compelling impulse. However, this path is fraught with challenges that she must navigate alongside newfound companions, all striving to reignite that twinkling, adrenaline-fueled passion within her soul.