Under-Praag has been a warren for rat kind for years-decades, with manfilth unawares of the mighty empire beneath them. Clan Pestilens is strongest of all, of course, and unleashes plague-disease on the manfilth at every opportunity. Test-guessing the result of plagues is a pleasant pass-time, but all Skaven yearn to crunch-skewer the upworld beast-chattel with their own paws. Or at least the paws of a nearby rat closer to the front.

To get more hands-on experience spreading their concoctions, the Profane Pustules have joined the KPA, ready to show the weak-frail manlings (and others) just how potent the Great Horned Rat and his followers are, yes-yes.

Along the way, the Profane Pustules have also found their true foes among the beast-lovers in Clan Moulder. The Volksgrad Surfers find life too much fun to have true follower-worship of the Great Horned Rat, and need to learn that pestilence, plague, and pain are the true gifts of He Below.