This thriller film is set in a strict South Korean school that was formerly a hospital. The film introduces the isolated school and establishes a creepy atmosphere through dark camera angles and strange sounds. Various students see dead people in the corridors and become afraid, helped by the chilling sound design and appearance of a frightening student with long black hair. The film uses sound and visual techniques to build terror in the school setting and among the characters.

1. Suddenly one day
This is thriller film, this
film talk about in Korea a local school inside
story. This school disciplineis very strict, each
student is not allowed to go out to school. This is
beginningof this film.
In this film, to begin with, this film introduction
about this school, this school of this place in the
past is a hospital. I saw a few minutes ago, this is
film usinga variety of angle and took a variety of
places, usingmany shoot angle. In here have a
lot of different characters, like many student and
four teacher and then have one parents. Every
time shoot a places, use very cautious camera
angle, the school are all dark. There are added to
film thriller atmosphere, the student saw many
dead people in the school corridor, and added

2. some strange sound, let people feel very fear.
Movie sound is very
important, voice make film of environment
more cold and cold bone. For sound presented
an atmosphere of terror, have many girl
screams. And second part have a student
dressedas long black hair and terrible eyes and
face, allow student to feel afraid.