According to an ancient prophecy, King Edward decides to take possession of four sacred relics. Three of them are already kept in his treasury. But the last one, which will open the way for him to the throne of Scotland, is still in the hands of Robert the Bruce. No one has ever managed to stand alone against an entire army of conquerors. Robert never feared death on the battlefield, but what if the battle for power was fought not on the field, but in the king's palace?