Read this story a while ago and can't find it now. It's set post apocolypse. Sam and John are hunters,They think that Dean died in the fire. it starts with them coming back after a succesful hunt. One of the slavers then gives them dean as a prize (don't think it was really a prize) Bobby's dead but there is a little boy with his hat that was a slave with Dean.

It's a longer story.

Thanks!