I have not watched the movie my self however the trailer does make it clear what the movie is going to be about without spoiling the plot.
This movie is not exactly distinct in any way as the idea of possession has been done many times before. One of the most well known examples of this is 'The Exorcist'. Also as is very common for possession movies, is that a little girl is the target as it invokes more emotion with the little girl being the most innocent. The trailer show with superimposed text that the movie is based off a true story however it is doubtful that these events occurred in the real world on such a large scale but those more religious or weak willed will be more afraid because of this.
The horror trailer seems to follow the general codes and conventions for a horror movie, particularly to the possession style sub-genre. There is a supernatural force that slowly takes over it's host and becomes more apparent the longer they are possessed. A religious figure or man who researches deity's will identify the demon who has possessed the target. Eventually the demon starts to become uncontrollable and as is with a trailer it ends so that you'll have to watch to movie to see the conclusion.
It is hard to relate narrative theory to a trailer as it is not the whole package however some analysing can be done. Todorov's theory can be applied to this trailer to a limited extent. At the start of the trailer which we assume is also the start of the movie, the father and his daughter are fooling around, having a fun time. The equilibrium is then disrupted when we hear that the box was not intended to be opened and the little girl opens it. We can also see this when the girl says herself that she feels funny. We do not know whether this equilibrium is restored or not and would need to watch the movie to find out, it is not certain as is normally the case with horror movies.
Propp's theory can also be related to this to identify certain character roles. The villain and the dispatcher is probably the demon. The demon is the one controlling the girl and is the reason the father is trying to help her. This leads to the hero and princesses father, the father of the possessed girl who must identify the villain and stop it from killing the princess, the little girl. The man in the university and the Jewish people seems to be the helpers providing knowledge on the situation to help the hero defeat the villain by knowing more about him. There doesn't seems to be a false hero at least from what the trailer shows and the donor may be the Jewish people who may have gave the man the book to perform an exorcism or it could also be the hospital to look at the girls medical condition.
Levi-Strauss' theory is about binary oppositions and some of these are presented in the trailer, particularly those in conventional horror films. A few examples would be.
- Religious vs Anti religious
- Natural vs Supernatural
- Good vs Evil
- Science vs Magic
- Control vs No control