Kasumi and the members of Poppin'Party, now in their second year of high school, find themselves busier than ever with student council duties, helping out at home, cram school, and part-time jobs. With less time to spend together, they struggle to gather at their usual meeting place—the storehouse at Arisa’s home. Then, one day, a girl appears before them— A new encounter. An unchanging bond. Afterglow, Pastel＊Palettes, Roselia, and Hello, Happy World! also take the stage, bringing their unique personalities to a dazzling and heart-pounding performance! "I want us to have a live show together again." The MUSIC(DREAM) begins to race forward once more!