Based on actual events, the film unravels long-held assumptions about France's last sanctioned duel between Jean de Carrouges and Jacques Le Gris, two friends turned bitter rivals. Carrouges is a respected knight known for his bravery and skill on the battlefield. Le Gris is a Norman squire whose intelligence and eloquence make him one of the most admired nobles in court. When Carrouges' wife, Marguerite, is viciously assaulted by Le Gris, a charge he denies, she refuses to stay silent, stepping forward to accuse her attacker, an act of bravery and defiance that puts her life in jeopardy. The ensuing trial by combat, a grueling duel to the death, places the fate of all three in God's hands.