When Gorum died, shards of his divine being rained down. One of these warshards landed in an ooze being transported outside of Oenopion. The newly-empowered creature escaped its confines and headed south towards the Mana Wastes. The Nexian forces haven't be able to deal with it, and have turned to hiring mercenaries. The Pathfinder Society learns of this chance to get their hands on another warshard, and has an arclord ally get them on the short list of candidates.

The PCs must prove their mettle over the other candidates before tracking this newly divine war ooze along the borders to the waste. What's more, the Mana Wastes themselves aren't going to make this mission any easier, and no one yet understands the full impact that warshards might have on creatures, so there's no telling the capabilities of this war ooze.