The reign of House Targaryen begins with this prequel to popular HBO series "Game of Thrones." Based on George R.R. Martin's "Fire & Blood," "House of the Dragon" is set nearly 200 years before the events of "Game of Thrones," telling the story of the Targaryen civil war with King Viserys I Targaryen's children battling for control of the Iron Throne.

The reign of House Targaryen begins with this prequel to popular HBO series "Game of Thrones." Based on George R.R. Martin's "Fire & Blood," "House of the Dragon" is set nearly 200 years before the events of "Game of Thrones," telling the story of the Targaryen civil war with King Viserys I Targaryen's children battling for control of the Iron Throne.