The main character was this white furry animal with a nozzle,
two long black ears, and a long tail.
It lived on a field with many of its kind.
One day, some black kinds came with an iron-gray city
and all the plants died except for a branch that the main creature
was able to brake off a tree he used to nap under.
The white one started to live in the city,
grew the branch in a pot and started to write a book.
The city was so polluted that the black ones were black because of the ash,
and many became sick then died.
One night, white glowing blobs that grew from the plant flew away,
and started to grow, encroaching the buildings.
Few nights later when the white one woke up from its nightmare of dying,
it finds gigantic white glowing jellyfishes floating through the city,
collecting all livings. The white one sees shadows inside
that looks like its kind, and wanted to join.
At last, it got collected inside the jellyfish with the branch
which had a field like the one it used to live and met its friend again.
I think that the white one died in his bed, getting sick by the pollution.
The scenes after jumping up from its nightmare are just the story
it wrote on the book, so it was the fantasy that the white creature had in mind.