Mumei is confined in a classroom full of traps. 
Trying to escape along with his comrades, they set off the traps and are sent to another world.
A strange old man was waiting there. 
Mumei's classmates exhaust themselves without skills going up against an enemy that gets stronger the more he drinks.
A sense of foreboding reaches the bewildered Mumei.
I'll show you...
سأريكم
Ich werd euch …
Les mostraré
Os voy a mostrar
Je vais vous montrer…
Vi farò vedere...
Vou mostrar para vocês.