The setting
A beach many years ago.
Conflict
The young man finds a lost thing and tries to take it to where it belongs.
Climax
He takes the lost thing to a place where there are so many other things that look as strange as the lost thing and releases it there.
Irony
The young man can't see any lost things anymore.
Symbols
Trains are a symbol of dull daily life with no imagination.
The lost thing is a symbol of wonder and imagination.
Theme
This video was kind of hard for me to understand not a verbal way but in a emotional way.
I think this is about people losing their imagination and happiness because they are too busy with their jobs.