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.
Right, I'll just act like I'm 
role-playing as Demon Lord Diablo!
Okay, wenn ich mich hier wie der König
der Dämonen verhalte und eine Rolle spiele …
Bien, seguiré comportándome
como el rey demonio Diablo…
Bien, seguiré comportándome
como el rey demonio Diablo…
Bon, je vais devoir interpréter à fond
le rôle de roi démon Diablo !
Ok, potrei recitare la parte di Diablo, il Re dei Demoni, 
come fosse un gioco di ruolo...
Certo, vou agir como o Lorde Demônio
Diablo, farei esse papel...
Если косить под Князя Тьмы,
как против игроков, то осилю!