To fulfil his destiny, first he must swear allegiance to his enemy...

King Edward of England marches on Scotland, inspired by an Arthurian prophecy to unite the British Isles under one crown. Only one man stands in his way. Robert Bruce is determined to claim the throne of Scotland.

But, on the run and hunted by a relentless assassin, his ambition appears far from being realised. And there are other families who hunger for the crown, old rivals gathering against him. Robert was always prepared to die on the battlefield, but in this deadly game of conquest, power and treachery, what else must he sacrifice to keep his hopes alive?