In the penultimate episode of House of the Dragon’s first season, titled “The Green Council,” the simmering tensions within the Targaryen family erupt into open conflict, setting the stage for the impending Dance of the Dragons.

A King's Death and a Power Vacuum
The episode opens with the sudden and unexpected death of King Viserys Targaryen, leaving the realm without a clear heir to the Iron Throne. Viserys' final words, whispered in his final moments, are misconstrued by his scheming brother, Lord Larys Strong, who takes it upon himself to interpret the King's wishes. This misinterpretation ignites a power struggle between the rival factions: the Greens, led by Queen Alicent Hightower and her supporters, and the Blacks, led by Rhaenyra Targaryen, the rightful heir to the throne.
The Greens Seize Power
The Greens, determined to secure the throne for Alicent's son, Aegon Targaryen, act swiftly and decisively. They convene a secret council, the titular Green Council, in the absence of Rhaenyra and her allies. During this meeting, they declare Aegon king, disregarding Rhaenyra's claim and setting the stage for a civil war that will tear the realm apart.
The Blacks Receive News of the Coup
News of Aegon's coronation reaches Rhaenyra and her supporters at Dragonstone, their ancestral seat. They are stunned and enraged by the Greens' treachery, and Rhaenyra must decide whether to accept their decision and relinquish her birthright or fight for what is rightfully hers.
A Mother's Grief and a Dragon's Rage
Rhaenyra, grieving the death of her father and the loss of her throne, is consumed by anger and despair. She unleashes her fury upon her brother, Daemon Targaryen, blaming him for their misfortunes. Daemon, ever the loyal ally, assures her of his support and pledges to help her reclaim her rightful place.
A Dramatic Escape and a Call to Arms
Rhaenys Targaryen, Rhaenyra's aunt and a powerful dragonrider herself, manages to escape from King's Landing, where she had been held captive by the Greens. She returns to Dragonstone and informs Rhaenyra of the situation in the capital. With this news, Rhaenyra decides to take action, calling upon her loyal supporters and preparing for war.
The Episode Concludes with Several Unresolved Issues:
Will Rhaenyra be able to reclaim her birthright and the Iron Throne?
How will the Dance of the Dragons unfold, pitting brother against sister, dragon against dragon?
What will be the fate of the realm amidst this devastating conflict?
As House of the Dragon's first season nears its conclusion, the stage is set for an epic and bloody civil war that will forever alter the course of Westerosi history. The Dance of the Dragons, a long-prophesied conflict, will test the bonds of family, loyalty, and love, as the Targaryen dynasty faces its ultimate reckoning.