It is early in the 10th century. England has crowned a new king - Æthelstan the Faithful of Wessex - who has endeavored to unify all the realms of the isle under one rule.
But unity is not always achieved through bloodless means.
For Wulfric and Hereric, brothers of dubious descent who have fled their native kingdom of Northumbria under circumstances they shall not fully comprehend for many years, the prospect of unity is as strained as that of England itself. Forced to endure a bloody, timeless pact, they are sworn as protectors of one another. But the gods and Norn-maidens of their religion have another fate in store for the two kinsmen.
Their oath in jeopardy, the brothers embark upon diverging paths that by fate will force them to decide where their loyalties are strongest. As a coalition of discontented Scots, Britons and an opportunistic Viking kingdom in Ireland gather to challenge the authority of Wessex’s overlordship, the paths they have chosen are destined to draw them into the upheaval that shall become England’s greatest struggle.
The Norns are weaving the black threads of doom, ravens are circling low above fallowed fields and the gods are set to unchain the wolves from their dens.