Some catastrophe of Old Testament proportions has turned our civilisation inside out, and this is the ramshackle home of a resourceful, but desperately lonely survivor. Clinging to the edge of sanity, competing with the packs of wild dogs for food. Beyond that, I haven't given it much thought.
I'm always fascinated by post apocalyptic visions, but this is a little different from the norm. Reminds me of the book The World Without Us, which described how quickly the remains of our civilisation would disappear.