From Diablo Wiki
|This article is a stub. You can help Diablo Wiki by .|
This article is a stub. You can help Diablo Wiki by .
The third act of Diablo III takes place in Bastion's Keep. Belial is already captured in the Black Soulstone, and Azmodan wishes to claim it by sending his demonic army to attack Bastion's Keep from the Arreat Crater.