Find Empress Caiatl somewhere in the Underbelly of the Leviathan.
Flavor text
Empress Caiatl has recklessly charged ahead into the Leviathan without the aid of Eris's protection magic. There, the empress intends to confront the Nightmare of Ghaul herself and sever Calus's connection to the Leviathan without the Vanguard's aid. Eris is not convinced that the empress will succeed and has dispatched you to find her before it's too late.