Nothing is what it seems to the four companions who must finish what a teenage girl started twenty thousand years ago.
Humanity went and did it. They bombed themselves right back to the Stone Age. The society that emerges thousands of years later has forgotten its origins, and functions much like a patchwork of medieval kingdoms. The world has recovered, inasmuch as it can.
This recovery triggered the release of an ancient horror, bent on destruction.
It starts when a mysterious animal begins eating its way through the forests. First animals, then the halflings in the outlying villages begin to disappear. A young Elven woman is driven from her home by the onslaught, and links up with one of the survivors of the last Halfling village to fall. In the relative safety of the closest city, they quickly run afoul of a pair of thieves. After a deal that makes all parties uneasy, the pair part ways with the thieves.
That is, until it becomes clear that the creatures that decimated the woods are now in the tunnels underneath the city. The four companions form a tense alliance, cemented when one of the creatures is finally killed.
Natural animals do not collapse into foul-smelling dust when they die. Something else is afoot.
In this world, nothing is what it seems. Are Elves really Elves? What makes a Halfling?
Can a being that was awakened twenty thousand years ago be destroyed for all time?
Apocalypse: By Albert Goodwin - http://www.artrenewal.org/artwork/154/3154/32410/apocalypse-large.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=17090743