This looks like something out of the sTiTchToWn project...maybe the rest of the floating floating folk from that story meet up with this lost soul? Maybe there are others like him/her/them floating about in the clouds where we can't see them? I imagine a baron and his family and staff who were caught up in an overthrow of greedy lords in their region (though they themselves had been good, generous people) and were forced to flee to protect their "treasure" (kindness), taking with them as many of the nearby inhabitants (who knew them for what they were) as they could. Perhaps they work together with the sTiTchToWn folk to create a society of people who have discovered that love is the most precious of gems, something worth keeping safe, up there in the troposphere.
Of course, just to add a little spice, perhaps one or more of the rabble-rousers who were instigating the overthrow manage to sneak in amongst the good people, and cause a ruckus which the sTiTchToWn folk help to quell...