A Pope and a King conspire in secret to rid themselves of the Holy Order of Knights. One because they have become too powerful, the other because he owes them a vast fortune. They lure the Holy Order to Poitiers castle where assassins lay in wait for their arrival.

After witnessing the massacre, three brothers escape from their captors and head for England and home. They are pursued every step of their journey by Mercenaries in the pay of the French King. If captured, they face certain death.

During their flight, bitter divisions arise between the brothers on how best to take revenge on the French King. Following an acrimonious power struggle, one of the brothers gets what he wished for while the others are left to suffer their fates at his hands.