The story follows Ser Duncan the Tall (Peter Claffery), a lowly hedge knight who happens to be - surprise - very, very tall. He sets out for the town of Ashford and is eventually accompanied by a young boy, Egg (Dexter Sol Ansell), who becomes his squire. While there, Duncan is put to the test in a tournament, with Prince Aerion Targaryen (Finn Bennett) rivaling the hedge knight. The series takes place nearly 100 years before the events of Game of Thrones, and nearly 100 years after the events of the ongoing prequel series, House of the Dragon.