Miguel Sapochinik (helmer of some of the best episodes of Game of Thrones including ‘Battle of the Bastards’ and ‘The Winds of Winter’) will serve as one of the showrunners alongside George R.R. Martin himself. Sapochinik will direct the pilot and a few other episodes of the first season. Less intriguing is Ryan Condal, writer of Rampage and Hercules, who’s set to be the other showrunner and screenwriter of the series. In a press release (via SlashFilm), HBO President of programming Casey Bloys had this to say:

Official synopsis of George Martin’s ‘Fire and Blood’ book: Centuries before the events of A Game of Thrones, House Targaryen—the only family of dragonlords to survive the Doom of Valyria—took up residence on Dragonstone. Fire & Blood begins their tale with the legendary Aegon the Conqueror, creator of the Iron Throne, and goes on to recount the generations of Targaryens who fought to hold that iconic seat, all the way up to the civil war that nearly tore their dynasty apart. What really happened during the Dance of the Dragons? Why was it so deadly to visit Valyria after the Doom? What were Maegor the Cruel’s worst crimes? What was it like in Westeros when dragons ruled the skies? These are but a few of the questions answered in this essential chronicle, as related by a learned maester of the Citadel and featuring more than eighty all-new black-and-white illustrations by artist Doug Wheatley. Readers have glimpsed small parts of this narrative in such volumes as The World of Ice & Fire, but now, for the first time, the full tapestry of Targaryen history is revealed. The release date of the Game of Thrones spin-off, House of Dragon, has not been announced.

Game of Thrones   House of Dragon  Spin Off Series Confirmed  Will Focus on Targaryens - 67