The premiere episode of House of the Dragon , " The Heirs of the Dragon ," kicks off the Game of Thrones prequel series by establishing the brutal Targaryen civil war, known as the "Dance of the Dragons". The story begins with King Viserys I naming his daughter, Rhaenyra , as heir after a tragic family loss and a, confrontational, decision to pass over his brother, Daemon. The episode highlights key characters, including the ambitious Daemon and the calculated Otto Hightower , while introducing the crucial prophecy of Aegon the Conqueror , which sets the stage for the conflicts to come. House of the Dragon: Season 1 | Wiki of Westeros | Fandom