HBO announced on Wednesday that its hotly anticipated Game of Thrones prequel House of the Dragon will debut on August 21. House of the Dragon takes place 200 years before the events of Game of Thrones, a medieval fantasy series that became a global phenomenon during its eight-season run. The new 10-episode series will be based on George R.R. Martin’s book Fire & Blood and will tell the story of House Targaryen, HBO said. August 21. #HouseoftheDragon pic.twitter.com/xH6T7b9sa9 — House of the Dragon (@HouseofDragon) March 30, 2022 King Viserys Targaryen. August 21. #HouseoftheDragon pic.twitter.com/uAX5JuPZCP — House of the Dragon (@HouseofDragon) March 30, 2022 Prince Daemon Targaryen. August 21. #HouseoftheDragon pic.twitter.com/GarXwUel6H — House of the Dragon (@HouseofDragon) March 30, 2022 Princess Rhaenyra Targaryen. August 21. #HouseoftheDragon pic.twitter.com/Iq6U1Jkoey — House of the Dragon (@HouseofDragon) March 30, 2022 Alicent Hightower. August 21. #HouseoftheDragon pic.twitter.com/Gjm0Cbshlo — House of the Dragon (@HouseofDragon) March 30, 2022 Otto Hightower. August 21. #HouseoftheDragon pic.twitter.com/ijjnLQOkxp — House of the Dragon (@HouseofDragon) March 30, 2022 Lord Corlys Velaryon & Princess Rhaenys Targaryen. August 21. #HouseoftheDragon pic.twitter.com/B6Srv5UoC8 — House of the Dragon (@HouseofDragon) March 30, 2022 Young Rhaenyra & Young Alicent. August 21. #HouseoftheDragon pic.twitter.com/VAAFqykM9e — House of the Dragon (@HouseofDragon) March 30, 2022 Ser Criston Cole. August 21. #HouseoftheDragon pic.twitter.com/tDjeBJzfN3 — House of the Dragon (@HouseofDragon) March 30, 2022 Mysaria. August 21. #HouseoftheDragon pic.twitter.com/6hAs3vDfy4 — House of the Dragon (@HouseofDragon) March 30, 2022 The network announced House of the Dragon at an event in 2019 to stir enthusiasm for the streaming service HBO Max. The drama will also be available on HBO television. The series stars Paddy Considine as King Viserys Targaryen, a warm and kind man chosen by the lords of Westeros to succeed the Old King Jaehaerys Targaryen, and Matt Smith as Prince Daemon Targaryen, younger brother to King Viserys and heir to the throne.