"I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man."
Three hundred years ago, Equestria tried to assimilate Earth.
They failed. They fled, rather than face justice.
We moved on. We conquered the stars, we made a civilization that spans across the infinite void. We built true harmony between species.
We thought we'd seen the last of Celestia, but as a desperate mobile colony on the fringes of known space came to discover, we were wrong.
It is time to finish what was started by our forefathers.
Sequel to TCB: Not Alone, by Starman Ghost.
EDIT: Following Starman Ghost's deleting of Not Alone, I've replaced the above link with one leading to a PDF file uploaded to mediafire.