Setting...A town near a beach
Point of View...First Person
Conflict...The lost thing doesn't know where to go.
Climax...The lost thing finds where he belongs to.
Symbol...Trains are a symbol of people's business.
Irony...After taking the lost thing back to his home, the boy goes back to his daily life and he couldn't see lost things any more.
Theme...I think this movie wanted to warn us that we are being too busy about ourselves and indifferent about others.