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?
They're taking a stand to
save Earth from danger!
!أتوا للتدخل عندما أحاط الخطر بالأرض
Sie springen in der Stunde
der Not der Erde in die Bresche!
Vinieron a proteger la Tierra.
Han venido a proteger la Tierra.
Sono qui per fare la loro parte
 per difendere la Terra!
Vieram para se impor contra a 
ameaça que aterroriza o planeta?!