Just working with some basic concepts right now. Alexandre Dumas inspired style of stories, in a pseudo-steampunk setting and may just have a heist story aspect to it. So like Count of Monte Cristo plus D'artagnan Romances plus steampunk plus other tired clichés packaged together into a NaNo novel. But at least it doesn't have sparkly vampires.
There once was a noble family that had a friendship with the king of the realm. There were also once other noble families that didn't like them so much. Once upon a time those noble families hatched a plot and got this first noble family exiled from the kingdom. Other countries that gave them refuge would do so at the risk of provoking a war. They were to be carried on airships, always to see their country but never to be a part of it, never to set foot on it again, for the rest of their lives. Their names and titles are stripped, estates razed, and history purged as much as possible. They became prisoners with no country and no identity.
One day a pirate attack (air pirates, of course) wipes out the family and their guards. Except for one child, who escapes. Somehow. He eventually ends up as an air pirate himself, becoming captain of his own ship with no one knowing he's the heir to this long deposed noble family. He has accepted this as the life that he will live. But then one day he has an opportunity to serve the kingdom that abandoned him--and in so doing, perhaps get revenge on those that caused his family's downfall.
This is set against the backdrop of economic turmoil in a kingdom dominated in commerce and trades by guilds and merchants. Some cities have fallen prey to revolts from the poorer citizenry who intend to set up their own governments and policies, but appear to only be making matters worse. Shockwaves are being sent throughout the entire kingdom and even neighboring countries. It's a hard time to be anyone, but is there something more behind all these troubles?