Please, listen: if you are looking for a "classic" story you should choose something else. A story is here, indeed, but it's buried under a series of episodes and different POVs – it feels like we are having the chance to observe the behavior of the inhabitants of a parallel dimension from the fixed cameras of an internal surveillance video system (a very special one, equally able to look in the present, in the past and in the dreams of the strange characters displayed).
What we get, in the movie, it's a composite drawing of the social, private, and inner lives of those characters. And it's strange, of course: sometimes you can hardly tell the difference between the dream and the reality and the reverie – as those surveillance cameras never flinch and inch, even in front of the most strange happenings. But, even if the cameras never moves, the images we are shown constantly jump the tone of the story from drama, to comedy, to horror, to nonsense, with a quickness that is uncommon for the genre-related, petrified narrative codes we are used to.
The main thing I could understand, in the end, is that the problem of the people living in this world is their inability to care about each other's feelings. Some of them eventually even understand this, and with regret, because they realize that if you are not able to love your close ones then you will hardly be able to love yourself. Still, all of them look completely unable to go over this self-imposed limit: so it happens that the stuffed pigeon at the begin of the movie seems by far to be the most alive of the characters featured – not to mention the happiest one.