It's an amazing film, Thought provoking, poignant and very haunting. I'd reccomend it to anyone even if you don't like animation.
The story's about 2 children who are trying to survive during World War 2 in Japan. It's such an amazing film. Here's a trailer.
It's subtitled but there's a English dub of it so give it a try if you get a chance! It's truely a great film.