A corrupt god demands blood sacrifice from his people, and the young warrior Herkuhlos journeys to the west to save them. But a far greater danger lurks amongst the stone circles of this strange new land that will take more than his immortal strength to overcome. On the wild shores of the cold northern sea, Sif is a young huntress and healer. Both spirit walkers of her tribe have mysteriously vanished, and only Sif can find them. But there is a traitor amongst her people who will do anything to stop her from uncovering the truth. Torkos the Devourer is finally free from his long captivity, and now he is hunting the beautiful goddess of the Seal People to claim her as his own. But a son of the Usurper has tracked him from the east. If he is to win the ancient war against the gods, he must first destroy the Godborn. Only one figure from legend can unite the clans and defeat the evil that is devouring this land. First he was the Godborn. Now, Herkuhlos must become the Thunderer.