You came to see the old datached house which you are going to buy.There is no one in the house.While looking through the numerous rooms and corridors you understand that there is something unusual.Since then you found out a terrible story.Besides you understand that you're not alone there.There is a "master" in the house,the personification of the evil.At first it will frighten you,then it will try to kill you,after that it'll call its dark forces.You have either to die or try to win the evil by all means...
