William Gold comes into the world as his family slides down the social ladder. His head filled with tales of chivalry, instead he is branded a thief, and must make do with being squire to his childhood friend Sir Robert, a knight determined to make a name for himself as a man at arms in France. While William himself slowly acquires the skills of knightly combat, he remains an outsider - until the Battle of Poitiers when Sir Robert is cut down by the greatest knight of the age and William, his lowly squire, revenges him.