Viserys Targaryen (to Rhaenyra): Aegon foresaw the end of the world of men. 'Tis to begin with a terrible winter gusting out of the distant north. Aegon saw absolute darkness riding on those winds. And whatever dwells within will destroy the world of the living. When this Great Winter comes, Rhaenyra, all of Westeros must stand against it. And if the world of men is to survive a Targaryen must be seated on the Iron Throne. A king or queen strong enough to unite the realm against the cold and the dark. Aegon called his dream "The Song of Ice and Fire."
This quote comes from a TV series House of the Dragon. The scene where this moment comes from is from Season 1 Episode 1, with the title of ‘The Heirs of the Dragon’ (1×01). The show is a prequel to the Game of Thrones series and also known as Game of Thrones: House of the Dragon. | The series is produced by HBO