Celestia and Luna are Equestria's oldest alicorns, but what were they before? How did they gain their incredible power? And where did they come from?

Roughly 1130 years before the events of season 9, we may see the princess's start, in the mysterious and xenophobic nation of the Alicorns.

There are dark forces in this world. Entities who seek to destroy all that stands, the pony of shadows being one of them... Equestria has faced many terrors, and overcome each of them. While tales are told of the other foes to be defeated, these beasts have been kept so secret that not even Princess Twilight Sparkle knows of their existence...

Luna has not always stood against these monsters. In the distant past, others claimed her mantle of guardian of the night - this is their story.

In a land fragmented, Dream Weaver, a skilled unicorn focused on the crafting of complex runes and the development of new spells receives a summons - the spirit of knowledge has given him permission, along with the means to access her realm. He accepts, starting him down a road that will change the future of Equus - and perhaps the worlds beyond - for all eternity.