A Warhammer Age of Sigmar novel tying in with the hugely successful Warhammer Underworlds game.

Ghur is a realm of vast wilds and savage beasts. Few are more vicious than the herdchief, Ghroth the Rootcutter. Brutal and ruthless, he leads his warherd from one massacre to the next, slaughtering all who defy him. Yet this is not enough to sate Ghroth's bloodthirsty ambition – to become the mightiest of beastlords. When a fearsome vision promises Ghroth the power he craves, he leads a small band of warriors far across the wastes to seize the relic that will make all beastkin submit to his dominion.

But Ghroth's ambition is not unopposed. Rivals within his own warherd seek to cheat him of the prize he covets, and in the enchanted forest of Thornwyld, an enemy of a different kind stirs. The branchwraith Kyra has also had a vision, an apocalyptic foretelling of the destruction Ghroth will unleash upon her home. Gathering a retinue of dryads, Kyra hastens to thwart Ghroth's hunt – either by killing him or destroying the dark relic he seeks.

The trail will lead both beastkin and sylvaneth across perilous wastelands. But no danger is greater than that which waits in the mountain tomb of the godbeast. It is a place of terror and legend, a place spoken of in frightened whispers. It is a place called Beastgrave.