When King Henry appoints Thomas Becket as his Archbishop of Canterbury he does not realise the problems he will create for himself. When the priest refuses to allow the King's brother then tensions escalate. It soon becomes clear that King Louis of France has woven a complicated alliance of enemies and spies in an attempt to reclaim the Vexin from King Henry. The Warlord is forced to defer his visit home and join the King in putting down a rebellion...