This month sees the return of Game of Thrones, although this time the conflict takes place far earlier than the events of the HBO series. The first Game of Thrones spin-off drama, House of the Dragon, premieres on HBO on August 21.

This fantasy drama is based on George R.R. Martin's 2018 novel Fire & Blood, which details the history of the Targaryens. The first George R.R. Martin show was based on the book A Song of Ice and Fire. The House of the Dragon is planned to precede the "Dance of the Dragon."

Siblings engaged in a brutal civil war over the future of the Iron Throne. The Targaryen family and the Seven Kingdoms were torn apart during this savage battle, which lasted for several years and finally resulted in the extinction of dragons.

Although the series is set at a time when dragons were a common sight for the Targaryens and those they controlled, we already know that Daenerys was eventually able to bring them back to the kingdom.

The storyline of the Game of Thrones spinoff takes place 103 years after Aegon Targaryen and his wives—who were also his sisters—flew over Westeros and seized control of six of the seven kingdoms.

When his brother Daemon (Matt Smith) learns that the king plans to name his daughter Rhaenyra (Emma D'Arcy) as his successor, the brother of King Viserys I Targaryen (Paddy Considine) becomes the target of court intrigue.

The Iron Throne has never been held by a woman until Daenerys, and even Viserys' own father choose his son, not his preferred daughter Rhaenys (Eve Best), to succeed him. As a result, Viserys' desire for Rhaenyra to succeed him causes problems.

Thus, the show delves into the complex conflict between the Targaryens over who would succeed him and the events that led up to the "Dance of the Dragons," in which the Targaryens engaged in a bloody civil war and decimated numerous towns and human lives.

R.R. Martin has previously declared that the series will make minor adjustments to the events as we currently know them, but because he played a significant role in its creation, he gave the series his OK.