One day a man met a mysterious creature by the sea.
Nobody realized the existence of it because everybody were busy,
and anybody didn't come back to take it.
They played together and then he felt sorry and took it to his house.
His parents also didn't realize it in the beginning and said that he should take it away.
So he hide it and began to find place where it had to belong with.
Finally they found the place.
They said goodbye.
This is the story.
I think the "thing" that is "lost" is which is in everywhere around us but we forgot already or cannot realize in this busy modern life.
The "lost thing" was described as somehow lovely and cute which we have to cherish.
Society is changing at all times.
We are getting busy.
We got many useful new things. It can be new technology, new custom, or new way of thinking..
Then we desert many things.
But there are a lot of things, thoughts, concepts, images, or believes which we don't have to forget.
I think all of theses things can be the "lost thing".
The animator want us to realize the existence of them.
He want us to stop to find and remember the thing we lost but must not forget.
And also we need time to stop and think about something in this busy world.