It's too soon to celebrate summer vacation for Mumei and his classmates. Something seems off about Miss Ou. With the moon creeping ever closer, Mumei learns that even his Shokatsu Technique isn't invincible.  With the Earth and Haku's life on the line, one final test will put Mumei and the others through the ringer. Is there really anything the Shokatsu Technique can't solve?
I will tell you this as a 
messenger from the universe...
سأخبركم هذا بصفتي رسولةً من الكون
Als Botin des Universums kann ich
euch so viel verraten:
Se lo diré como mensajera del universo.
Os lo diré como mensajera del universo.
Je suis une ambassadrice
venue du fin fond de l’espace.
Visto che sono la messaggera
dell'Universo, ve lo dirò.
Direi que sou uma mensageira do universo.