Diablo, Shera, and Rem head out to the plains to test out new magic. While using said Flight Magic, Diablo spots the light of magic energy rising up from deep within the forest, so he makes haste towards its source. However, his spell gives out half way, and he goes plummeting down!

When he lands, he finds the Head Priest, Lumachina under attack from the Paladin, Gewalt.
A holy maiden's purity is about 
to be tarnished by my Summon.
Dass mein beschworenes Monster …
Mi Invocación está a punto de empañar
la pureza de una doncella sagrada.
Mi invocación está a punto de empañar
la pureza de una doncella sagrada.
Quand je pense
que ma bête invoquée
La castità di una giovane consacrata
A pureza de uma donzela sagrada está prestes
a ser manchada pela minha invocação.
Призванный мной тёмный зверь…
вот-вот опорочит тело пресвятой девы.