What's the meaning of "Cat Soup" plot and ending? I have watched the entire video of Nekojirou-sou (a.k.a Cat Soup) anime, but I still don't understand the ending of Cat Soup, neither the plot. It started from 2 siblings cat, well I don't know how to describe the entire story, but at the end of the story, why is everyone "gone"?
I guess, the plot itself is explained fairly easily:


  A cat named Nyatto embarks upon a journey to save his sister's soul, which was ripped in two when Nyatto tried to save her from Death. She trails after him, brain-dead. They encounter many brilliant, mind-bending situations, beginning with a disturbing magic show.


Taken from AnimeNewsNetwork

But the movie contains a lot of surrealistic parts and has many underlying themes, which makes it difficult to completely understand it. Many people see it more as a kind of art than just an anime movie. So, the interpretation of certain parts differs greatly from person to person.
As far as I know, there is no official explanation about it, which makes sense, since it would take away a lot from the fascination, which the movie can provoke inside the viewer.