main idea of film

The Main idea of our trailer is dealing with possession and characters turning crazy. The main character will show progressive anger and signs of turning against his friends. Eventually this character will attack his friends with weapons and they will have to figure out why he is doing so. The reason for this possession is because of an old necklace that is found, whoever is in possession of this necklace for any extended amount of time will show signs of craziness and attachment.