Where did the Changelings come from? How did Discord come to be? And what happened to the ancient alicorns?

To answer these questions, one must turn back the clock, to an era at its climatic closing...

Author's Note: Changed into a one shot. I may write the bulk of the original story at a later point.

Sunset Shimmer's life has been turned around. She's been accepted back into the high school community, her friends have her back, and overall, everything is wonderful.

But deep underground, a machine has been awakened, a machine that has been buried for thousands of years...

Author's Note: This is a crossover with the Bolo universe - which is only the third Bolo story published on Fimfiction so far.

Eight months after the events of Equestria Girls 2: Rainbow Rocks, a new threat arises that not only threatens Equestria, but also every other dimension in existence - and it's Twilight Sparkle! Twilight has faced many threats to the safety of Equestria over the years - but can she face down herself? And what part does Human Twilight play in all this?

This story is a sequel to My Little Pony Equestria Girls 3: Twilight's Shadow

As Twilight wanders within the ruins of the Castle of the Two Sisters, she is blissfully unaware that she is about to discover a secret that has stayed buried for close to a millenium...and will change her understanding of Celestia and Luna - forever.