1356. The Hundred Years War rages on and the bloodiest battles are yet to be fought. France stands alert to danger. The English army, victorious at the Battle of Crecy and led by the Black Prince, is invading again and the French are hunting them down.
Thomas of Hookton, an English archer, is under orders to seek out the lost sword of St Peter, a weapon said to grant certain victory to whoever possesses her. As the outnumbered English army becomes trapped near the town of Poitiers, an extraordinary confrontation will ignite one of the greatest battles of all time.