What social disintegration is like. Ways to respond to it. In the movie that was sparked by people not having children, but it's not really about the spark, but about projecting further social disintegration in our societies on the paths they are now (many people here say the picture seems familiar or prescient, and they're not talking about birthrates), and the choices that gives or takes away from people.
But thats just me, I didn't mean to be telling you what it has to be about for you.