Mareitania, the old kingdom. A kingdom of secrets and oppression, where earth ponies rose to power in the absence of the unicorns and the pegasi following the events of hearthswarming. A kindom where having a horn is a travesty and having wings is a sentence to life long slavery.
Unfortunately for Twilight she has both. When she and three companions are tasked with tearing down the tyrannical government of Mareitania, with nothing more than their own ingenuity and some words of encouragement, she finds that plans are super awesome for getting things done.
(Canon up to Rainbow Rocks, but not with the comics although I might add the occasional bit I find out from them. My first foray into a longer piece, and honestly I have no idea how this will turn out.)
Tagged dark because some unpleasant stuff will probably happen along the way, even if my writing style isn't particularly dark itself.
Slight change to name since I was starting to think Operation: FreeMare wasn't giving the right impression on its own.