setting: In the future, in the city.
conflict: The boy and the lost thing vs. society.
climax: They found a place where the lost thing belongs to at the end.
symbol: The lost thing symbolize the thing which people tend to ignore in the modern society.
irony: The boy couldn't see the lost thing when he got older.
theme: People should not ignore or forget thing which surrounds you.
I'm sorry to post this video comment very late.
