I have not read the book by Franz Kafka but it can't be better or creepier than this drawn short-movie.
It's about an ill child and a doctor who should help the child... I can't say more.
The drawings are awesome, confusing, creepy and someway disgusting but in a way that it's still some kind of art.
The music absolutely fits, same for the voices. The whole atmosphere this short flick raises up so fast is incredible, I would really like to see more stuff like this. The only things I could compare it with are the flash animated cartoons by David Firth.
Just watch it, it's sick and dark but also beautiful in it's way.