House of the Dragon | The Heirs of the Dragon

During old king Jaehaerys Targaryen's reign, tragedies took his sons' lives, leaving the succession undecided. A Great Council convenes to choose Westeros' future ruler. Jaehaerys' grandchildren, Princess Rhaenys Targaryen and Prince Viserys Targaryen (Rhaenys' younger cousin) are the candidates. Westerosi law gives a male heir precedence over a female, regardless their birth order and Viserys is chosen. Nine years into King Visery I's reign, the Triarchy, an alliance formed by the free cities of Essos, threatens the kingdom, wanting to seize the Stepstones region. Viserys must also restrain his brother Daemon's brutality as the City Watch commander in King's Landing. Viserys, certain that pregnant Queen Aemma will bear him a son, holds a tournament to celebrate the impending birth. During the event, Dornish knight, Ser Criston Cole defeats Daemon in a competition while Queen Aemma and her son die in childbirth. The Hand of the King, Ser Otto Hightower, proposes that Viserys' only living child, the young princess Rhaenyra, be named heir to the Iron Throne. After a dispute with Daemon, Viserys proclaims Rhaenyra as the next ruler.