A prophetical nightmare about the inevitable consequences of our way of living in the 21st century.
A dysfunctional family with emotionally drained bonds between them, with patterns of social arrogance, mistrust and racism in their relation to another couple, each trapped in a doom-like situation, without a point of return to normal. The way they successfully describe the evolution of a global apocalypse here is disturbing, but absolutely true. It's likely that it won't come with a Big Bang, but with a whimper, a creeping process, which no one is able to understand or control, during everything looks like normal, but under the surface, invisible, everything has already changed with fatal consequences. The occuring events are enigmatic and the uneasiness resulting from that is perfectly shown by camera movements, montage of sequences and sound design.
Nature is out of balance, natural and technical ressources come to an end, our total slavish dependance on digital gadgets makes us vulnerable, a perfect target. Ignorance won't help us out. It's devastating that many of the viewers are already unable to get the crystal clear message of this movie. They prefer to continue, ignore and entertain themselves with stupid sitcoms.
That's what the end is telling us! And that's why they don't get it.