Many moons ago, Nightmare Moon was banished with her servants and soldiers. For centuries the colony forgot about their conquest of Equestria and just decided to survive a century before the Nightmares' freedom. They prepared for a war that would never come, yet even then, their grand general wouldn’t be easy.

The cover is a piece I made in school

One Changeling emperor attacks canterlot, to steal her daughters statue. Only to kidnap the princess and her friends. Separated by magic each of them sent to Changelings hive.