Almost two centuries before the Long Night, Red Wedding, or the Battle of the Bastards, another massive conflict wreaked havoc across Westeros. The first of many planned spin-offs of HBO’s landmark series Game of Thrones goes back to an era when the Targaryens ruled the Seven Kingdoms and dragons were plentiful.

Based on material from George R. R. Martin’s book Fire & Blood, House of the Dragon tells the story of the Dance of Dragons and the events leading up to the brutal civil war. King Viserys I Targaryen rules over an unprecedented time of peace, but questions about his succession threaten to send the realm into chaos. Will Princess Rhaenyra Targaryen sit on the Iron Throne, or is Westeros not ready for a queen?

House of the Dragon was developed by Ryan J. Condal and Miguel Sapochnik. It stars Paddy Considine, Emma D’Arcy, Matt Smith, Olivia Cooke, Rhys Ifans, Sonoya Mizuno, Milly Alcock, Emily Carey, and a whole lot of dragons.