They all survive.
Dany shows up with 15 dragons.
Euron does another bu'bye and ditches Cersei.
The people of KL rise up and depose Cersei, who is forced to seek sanctuary with SnowDany.
The Hound seeks out his brother in the chaos, only to find him already dead. "You never did let me have any fun.". The Hound relieves himself on the corpse.
Everybody meets in the throne room. Everyone pledges fealty to Snow/Targaryen.
Snow abdicates citing his pledge to the Nights Watch. He pledges fealty to Dany.
Dany sits on the Iron Throne and repeats her pledge to break the wheel. She dissolves the Night Watch and appoints Snow Lord Captain of Kings Landing.
She creates Davos as Lord Captain of the Storm Lands.
She creates Sansa as Lady Guardian of the North.
She creates Arya as Lady Guardian of The Bear Islands. Arya creates Sandor as the captain of her guard and asks if he thinks he can find 100 swordsmen who aren't a bunch of c***ts.
Edmure Tully is restored as Lord Captain of Riverrun.
Tyrion is created Lord Captain of Casterly Rock.
The extant Martell Prince is confirmed Lord Captain of Dorne. Ellaria is released, but is a madwoman.
Brienne of Tarth is created Lady Protector of The Reach.
Yohn Royce is confirmed Lord Captain of Arryn.
Cersei is to be held prisoner until she comes to term. Her child will be entrusted to Tyrion. Cersei and Jamie are then to be banished to become the Guardians of the Winterlands. Their child will be hostage against any invasion from beyond the wall. When the child comes of age, they will be allowed to meet him/her.
Dany stands up and moves to stand next to the throne.
"So ends my reign. Westeros has had enough of Kings and queens. "it is always the innocents who suffer most, when we play at the game of thrones?'
"I have done what I came here to do. I'm going home to my beloved Dothraki. I will lead them South to rekindle the Valeria that was."
She glances at the throne, then to Tyrion. "What do you think we should do with this?" Tyrion grins.
3 dragons are seen in an open square. They ignite and melt the throne to slag. Varys arranges for words to be carved into the stone footing. "Thus is ever the fate of tyrants who would invoke destiny."
Grey Worm becomes the Lord Protector of Dragons Bay.
He renames Mereen, Melisandre.