After Cure Muse's mission of restoring her father's kind heart was accomplished, Ako and Mephisto decided to return to Major Land together. Suddenly, a howling noise rang through the city, and when it died down, all music was gone. Ako and Mephisto tried to establish contact with Major Land, but could not get a response.
Full of worry, Hibiki and the others headed to Major Land, where there was no sign of the former land of overflowing music. The world was desolate without sound, its people...