What's the meaning of "Cat Soup" plot and ending?


I have watched the entire video of _[Nekojirou-
sou](https://myanimelist.net/anime/601/Nekojiru-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](https://www.animenewsnetwork.com/encyclopedia/anime.php?id=1011)

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.

