Vox Machina overtakes the duergar queen, Ulara, before she can make a thrall of Grog. After slaying her underlings, the party presses her for information about K'Varn. It is in that instant that K'Varn speaks to them, through the lips of the duergar queen, urging Vox Machina to find him in the city of Yug'Voril. They proceed on, finding a vast island in yet another massive underground cavern, and take to the water. Pausing at a craggy beach as they make their way to K'Varn, the party goes looking for trouble and does indeed find it.