Diablo resolves to return to Zircon Tower at once after learning the city was under attack by the Demon Lord Army.

Meanwhile the desert becomes a battlefield as Laminitus and her soldiers wage battle against the Demon Lord Army's Commander, Varakness. Laminitus struggles against the overwhelming might of the Fallen, and just as the final blow is about to be dealt to her, Diablo appears with a flash.
I simply taught them the 
power of the true Demon Lord.
Ich wollte denen einfach nur die Kraft
des wahren Königs der Dämonen zeigen.
Solo quería dejar patente el poder
de un auténtico rey demonio.
Solo quería dejar patente el poder
de un auténtico rey demonio.
Je n’ai fait que vous enseigner
la puissance d’un vrai roi démon.
Ho solo voluto impartire una lezione
 sul vero potere del Re dei Demoni.
Eu só mostrei a eles o poder
do verdadeiro Lorde Demônio.
Я лишь хотел показать им 
силу настоящего Князя Тьмы.