Once a symbol of hope in the hearts of people, music lost its radiance when the Kuroya Meteorite descended and unleashed the repulsive D2 monsters on the land. As the beasts were drawn to the tunes, music was banned. Defying the odds, a squad of Musicart girls arose to take on the conquerors. Tapping into the might of the most magnificent musical works of humanity, they now confront the D2's oppression with unwavering resolve.