Targaryens’ Greatest Secret to Be Revealed in New 'Game of Thrones' Spin-Off: What Happened to the Prophecy?
No one knows yet what the creators have in store.
As fans wait for season three of House of the Dragon, HBO is preparing another prequel — A Knight of the Seven Kingdoms. And it may be this new series that finally uncovers what has intrigued fans the most: where did Aegon the Conqueror’s prophecy go — the one passed down to his descendants?
Who Is Egg — and Why He’s More Important Than He Seems
The main characters of the new series are Ser Duncan the Tall and his squire, a boy nicknamed Egg. At first glance, he seems to be just a street kid from King’s Landing — but he’s actually Aegon V Targaryen. Yes, another Aegon, but he’s the one destined to unexpectedly take the throne and attempt to make the Seven Kingdoms a fairer place.
Egg is a crucial figure in Targaryen history, but he becomes even more fascinating in light of the prophecy revealed in House of the Dragon. Aegon the Conqueror foresaw the coming of the White Walkers in a dream and understood that one of his descendants would have to unite humanity against the Long Night.
What Happened to the Prophecy?
And here lies the central mystery: if the prophecy was passed from monarch to monarch, why does no one in Game of Thrones know about it? Neither Viserys, nor Daenerys, nor even the maesters.
The answer may be simple — the chain was broken. Perhaps Egg never received the knowledge. Perhaps he did — but chose not to pass it on. Or maybe, even more intriguingly, he became a Dreamer himself and saw something that made it all the more confusing.
A Knight of the Seven Kingdoms has the potential to shine a light on this gap. And if Egg indeed has a dream of his own, it might not just add to the lore — it could radically change how we understand Game of Thrones. The prophecy may not be lost knowledge, but a controversial truth someone chose to bury.
What Does This Mean for Daenerys?
If A Knight of the Seven Kingdoms reveals that the prophecy was known in Egg’s time but vanished later, that would explain why Daenerys never heard of it. It would also add emotional weight to her arc — perhaps she was meant to be the 'Prince That Was Promised', but no one prepared her.
Or — even more poignantly — the knowledge was lost because no one believed. Then the prophecy becomes a tragedy of a forgotten future, one that could have saved the world but was ignored.
While HBO keeps the new spin-off’s plot under wraps, fans can only speculate. But one thing is certain: Egg’s story isn’t just a side adventure. It may hold the key to the Targaryens’ greatest secret.
