Something rather nasty is going on in Uldum.
The Undercity Nexus, in the past, has successfully hunted down and eliminated remnant cells of the Cult of the Damned. We’ve stolen their research, usurped their plans, and for the good of Azeroth? We’ve pretty much been cleaning house where others have forgotten to dust. Or scrub. With corrosive cleaning chemicals and sometimes fire. Lots and lots of fire.
It’s been some time since the Nexus has gotten their last lead. But that’s about to change.