This is driving me nuts! I read this awhile ago on fanfiction.net, I didnt finish it (not sure if its a WIP or not) and only have a few things that I remember. It was quite a long, multiple chapter story from what I remember.

*Its post apocalypse, Dean was kidnapped when he was younger and is raised as bait (I think there was a bit where he was tied to a stake or something during a hunt?). He might have been kept underground or in a cage.
*Dean had a friend who might have been Bobby's son - he's younger than Dean? I think he had Bobby's hat. I think there was a scene where John was talking about how he'd helped Bobby search for the boy.
*Missouri was in it - her house is protected but surprisingly Dean can find it, theres a girl there who I think is a healer? She healed Bobby's son - they had to have a blindfold on to hide the identity of the girl?
*John finds Dean and gets the ownership rights to him (maybe).
*I remember a scene where john tells sam and dean to spar and dean kicks the crap out of sam - because he's used to sparring being more brutal (this is about the only scene I'm 100% certain on!).

Please help!