How the Viking forces prepared, before launching their attack on England. Dr Xand van Tulleken experiences battle training first hand. Archaeologist Raksha Dave learns how the Vikings pillaged the land.

The Vikings make brutal progress, taking control of most of England. Xand and Raksha delve into fragile alliances and devastating betrayals as King Ethelred and Prince Edmund Ironside join forces.

In the last episode, the Viking invaders prepare for a final showdown for the Crown of England as the two young would-be-kings, Edmund Ironside and Canute, are ready to fight to the death.