From the introduction:
The world had belonged to them once. The Gobolyns, Boggarts and Spriggans; the Trows, Trolls and Angorym; all the dark and twisted offspring of the un-living N'kroi. They roamed across the face of the world, awaiting the judgement of the Most High Lord of the Mountain.
Then came the humans. Deceived by the N'kroi, they left their home upon the mount. Lost in a world of darkness, they await the promised Son of the Mountain who will show them the path of return. But as they wait, they must survive. Cut off from their creator, surrounded by countless foes, they must slash and hack a place for themselves in which to live.