At a jousting tournament in 14th century Europe, several years after the Black Plague, squires William, Roland, and Wat discover that their master, Sir Ector, has died. With just one more pass, he could have won the tournament. Destitute, William wears Sir Ector's armour to impersonate him, taking the prize. Although only nobles are allowed in tournaments, William is inspired to compete and win more prizes. Roland and Wat would rather take their winnings and leave, but William convinces them to stay and help him train. While traveling, the trio encounters a young Geoffrey Chaucer, who is also destitute and agrees to forge a patent of nobility so William can enter, assuming the name of "Sir Ulrich von Liechtenstein" from Gelderland. But William is brought before Simon the Summoner and Peter the Pardoner: Chaucer has a gambling problem and is in their debt. William demands Chaucer be released and promises payment. During the competition, William's armor is damaged very badly; he goads Kate, a female blacksmith, into repairing it without payment. He wins the tournament's sword event, enabling him to pay Chaucer's debt. In the joust, he faces Sir Thomas Colville, who withdraws from the tournament after being injured by William, though they exchange a ceremonial pass so that Colville can retain the honor of never having failed to complete a match. The proceedings are observed by Jocelyn, a noblewoman with whom William has become infatuated, and Count Adhemar of Anjou, a rival both in the joust and for Jocelyn's heart. In the final joust, Adhemar defeats William. At the prize ceremony, William vows revenge on Adhemar, who then taunts William, "You have been weighed, you have been measured and you have been found wanting." Kate joins William's party and forges new lightweight armor. In the following tournament, Adhemar and William are both assigned to tilt against Sir Thomas Colville, but they learn that he is actually Prince Edward. Unwilling to risk harming the future King of England, Adhemar immediately withdraws prior to their match. William, despite his friends' objections, chooses to joust against Edward anyway and then addresses him by name, further earning his respect. Adhemar is called away to the Battle of Poitiers, and William achieves several victories in his absence. William proves his love for Jocelyn by complying when she first asks him to deliberately lose (in contrast to knights who promise to win "in her name"), and then, just before he would be eliminated, to win the tournament after all. The group travels to London for the World Championship. William recalls leaving his father to squire for Sir Ector and learn to become a knight, hoping to "change his stars". Adhemar has also arrived in London and announces that he is in negotiations with Jocelyn's father for her hand in marriage. William dominates at the tournament, but when he visits and is seen patching his now-blind father's leaky
