The movie is a true story on child abuse at a school for the deaf.
Also, in case you don't know, South Korea has the best child actors you can find in decent cinema. I've seen kids that mop the floor with even their talented adult co-stars. I don't know if the kids know how awesome they are and do it actively or if they are just guided very well into their performance by the makers, but they simply rock. So, very looking forward to seeing what the kids here can do with such a heavy movie.
Here is the trailer then, in case you don't want to go and find my other post for it, you lazy... :P And there's the 30s trailer, for those who read so far, which also rocks. I put that first here, since it's shorter.
Videos from HanCinema