NOTE: I wrote this prior to the episode "Luna Eclipsed". However, her non-shouting voice can be easily explained by saying "That's her public voice, not the Black Ops quietness" voice"
Kurt Foalington was the middle child of a rather successful family in Canterlot. In a peaceful society, he was the proverbial black sheep. He loved the fray, and most ponies with power didn't like having a threat to their otherwise peaceful society.
Things get really messy when he figures out that society had set up a cleverly-designed prison, and he wanted to meet a young filly.
Then it gets even messier when his younger brother goes missing.
---
An alternate world where society isn't perfect, and it's not the only one in general. Events are otherwise the same in the show.
OC-centered, with canon cast appearing at points, so I guess that's something for those of you who foolishly exclusively turn your interest towards everything that, for all you know, gets the canon completely wrong.
[Yeah, I'm a bit of a bitter guy towards people who dismiss entire fics just because it has an OC in there somewhere.]