A hedge knight, Ser Arlan of Pennytree, has died during the night. His squire, a large young man named Dunk, buries him and pays his last respects. After considering several options, Dunk decides to continue his journey to Ashford and compete in the tourney as a knight. He adopts Ser Arlan’s armor as his own, as well as his equipment, three horses, and remaining monies. At an inn on the road, he meets a boy with a shaved head named Egg who secretly follows him to Ashford. Impressed by the boy’s spirit, Dunk takes him on as his own squire for the upcoming tourney.

At Ashford, Dunk sells one of his horses to commission armor, then attempts to enter the lists of the tourney. Without proof of his knighthood, he is nearly barred from competition until Prince Baelor Targaryen vouches for him. Dunk watches the first day of competition amongst the commoners, with Egg on his shoulders. After several spectacular tilts, the day ends when Prince Aerion Targaryen disgraces himself by killing Ser Humfrey Hardyng‘s horse.

That night, Egg informs Dunk that a puppeteer girl he had met earlier is being beaten by Prince Aerion. Dunk leaps to her defense and attacks Aerion, striking him in the face. As the royal guard arrests Dunk, Egg reveals himself to be Aerion’s brother, Prince Aegon Targaryen. In jail, Dunk chooses to take a trial by combat rather than lose his hand. Prince Aerion demands the combat to be a Trial of Seven, as his brother, Prince Daeron, also accused Dunk of kidnapping Aegon from his charge. Dunk must find six champions to fight with him against seven accusing knights, or he will forfeit.

Steffon Fossoway is the first ally Dunk finds. He promises to bring Dunk more champions, as does Steffon’s squire and cousin, Raymun Fossoway. Egg also promises to bring more champions for Dunk’s cause. Raymun returns with Ser Humfrey Hardyng and Ser Humfrey Beesbury, good-brothers seeking revenge for the grievance Aerion committed against Hardyng. Aegon brings Ser Robyn Rhysling and Ser Lyonel Baratheon, the Laughing Storm, both eager for the glory of competing in the first Trial of Seven in a century. Steffon returns only to say he has decided to fight with the accusors for the reward of a lordship. Angered by his cousin’s treachery, Raymun begs to be knighted and fight in Steffon’s place. Dunk hesitates, but before he can give his answer, Dunk is called away by Lord Ashford, and Lyonel grants Raymun his knighthood. Still needing a seventh champion, Dunk appeals unsuccessfully to the crowd. Finally, Prince Baelor announces that he will champion Dunk himself, though the accusers include three of his family members and three of his father’s Kingsguard.