I had an idea based off certain situations that happened during the "Spartacus" TV series (mostly Season 2 and 3)
Though it'd be more of a civil war than slaves turning on their masters.
The Kephler Empire is set in a fictional world very similar to Earth in the 4th century. Kephler rules most of the known world with small countries outside the bordering lands. The story begins after the Emperor Mars Kephler is overthrown by the senate and replaced by his nephew Apollo Kephler. Mars' son Hades flees to the bordering lands where he makes plans to unify the scattered tribes and reclaim the throne that is rightfully his.
Players can join Hades' rebellion or serve Apollo Kephler, or even remain neutral as others may try and convince them to pick a side.
Any Male and Female soldiers. (Rebel or Kephler)
Hades' favorite female servant who Hades has frequent affairs with. He will end up marrying later in the story
After provoking his wife to attack her, which the servant accidentally kills in self-defense.
A Freed Slave who joins Hades as revenge on Kephler for killing his wife.
A disgraced soldier who seeks to regain honor with Kephler by killing Hades (Warning: He will die near the end of the story)
Pirates, will help a great deal in gaining supplies as well as providing transport.
Additional roles welcome as long as the character is unique and interesting.
As I said before, you can choose who's side you're on in the Civil War.
I intend to post more information about the world, as well as character bios once enough people show interest in joining.