The Dance of the Dragons was a civil war during Targaryen rule of the Seven Kingdoms. A war of succession between Aegon II and his half-sister Rhaenyra over their father Viserys I's throne, the war was fought from 129 AC to 131 AC. It saw the deaths of both rival monarchs, and the crowning of Rhaenyra's son, Aegon III.
In early 2013 George R. R. Martin announced that the anthology Dangerous Women, previously expected to include the fourth Dunk and Egg story, would instead include the novella The Princess and the Queen, which Martin described as "(...) the true (mostly) story of the origins of the Dance of the Dragons." The abridged version in The Princess and the Queen consists of 30,000 words, while the complete 80,000 word history of the civil war is planned for Fire & Blood.