Set nearly 200 years before Game of Thrones, King Viserys I Targaryen names his daughter, Princess Rhaenyra, as heir to the Iron Throne, breaking tradition and igniting tensions within the realm.

House Targaryen is divided in two. Civil war looms as both sides seek support from the great houses of Westeros, ultimately amassing armies — and dragons.

The Black and Green factions lock into an all-out, relentless struggle for the Iron Throne. As dragons and armies clash across the realm, Westeros witnesses the devastating consequences of total war.