Who?
a creature that has a ear like a rabbit
Where?
First, at a place like a field where there are much green.
Then, it turns in to a place where it's very polluted.
When?
one afternoon
What's the problem?
All the sudden, the field turned in to many tall buildings, like a polluted city.
How is the problem solved?
A huge balloon like creature that has a clean field inside, swallows the creatures that looks like a rabbit and saves them from the polluted air.
How does it end?
The main character was swallowed from the balloon like creature and ends happily.
Theme?
I think this video reminds us that the city is very polluted and we should remember that all places would't be polluted if we didn't do anything to the environment.