Kanae and Sosuke are two high-school students living in the suburbs in Japan where music flourishes. One day, they encounter Beethoven and Mozart, two suspicious men who call themselves ClassicaLoids. The Musik they play have mysterious powers, such as causing meteor showers and summoning giant robots. Kanae and Sosuke's daily lives suddenly turn chaotic! Adding to the commotion are the appearances of other ClassicaLoids such as Bach, Chopin, Liszt, and Schubert. What is the big secret behind their powers? And are they a threat to humankind, or could they be saviors?.