Equestrians are surprisingly adaptable. For instance. An Alien race claiming themselves the Xeno-Equestrians invade the planet and wreak havoc like no tomorrow. Every Equestrian fights back, and the same for the griffins. The sea ponies. The dragons. Everyone.

This story is not without it's losses and harsh moments. They have a society equivalent to Equestria's own, form a xeno-Twilight to a xeno-Celestia. Removing the very head of the kingdom from power was a cinch, and Twilight, she was simply removed instead of executed like the goddesses.

Their first mistake was to take the princesses. Their second was leaving Twilight alive. She will retaliate.