Kasumi Toyama and her high school bandmates in Poppin'Party face a fresh set of challenges as they enter their second year. Juggling student council responsibilities, cram school, and part-time jobs, they find themselves in different classes, limiting their precious time together. Amidst this shift, their cherished moments seem like distant dreams as they struggle to gather for practice. Just as they reflect on their predicament, a mysterious girl appears, reigniting their passion for music. With the rise of girl bands like Afterglow, Pastel*Palettes, Roselia, and Hello, Happy World!, each showcasing their unique styles, Poppin'Party re-enters the spotlight. Through new encounters and musical wonders, the stage is set for their exhilarating comeback, where the electrifying melodies once again fill the air.