In George R.R. Martin's world of A Song of Ice and Fire, the Dance of the Dragons is the civil war that erupts after King Viserys I Targaryen's death. Stirred by his kin, Queen Rhaenyra Targaryen and her younger half-brother, Aegon II, rally the Kingdoms behind their claim to the throne. The claimants have different mothers, but share the same father. As seen in House of the Dragon, Rhaenyra is Viserys' firstborn daughter and decreed heir, while Aegon II is his firstborn by Alicent Hightower.