This is the invention of a new sub-genre: Postapocalyptic boredom. Why bother with a story if you can watch two completely uninteresting random people do completely uninteresting things for 1:30 hours. Sounds great doesn't it? Nothing happens in this movie. It is empty, pointless, boring and depressing. There is no plot. Only nothingness. Just two people doing nothing. Did i mention it was boring? Really really really boring.
This is by far the best explanation of what to expect: Nothing is a concept denoting the absence of something, and is associated with nothingness. Nothing denotes things lacking importance, interest, value, relevance, or significance. Nothingness is the state of being nothing, the state of nonexistence of anything, or the property of having nothing. (quote from Wikipedia).
The problem is that with (mostly) only two people on screen that you really know nothing about it is hard to care about anything happening to them. the main characters never really showed anything about themselves to get me emotionally involved. It all felt very shallow and flat. Sorry to say but throwing in some philosophy and giving it some artsy name doesn't make it art.