You are a normal guy who has come to Busan from Seoul to live. You come to Busan for work and book a room in a hotel in Busan which is a very good and very expensive room. It is easy for you to buy a room because you are very rich and smart but that room looks very nice but the story behind it is very horror. You do not know that there is a ghost living in that room. No one told you, that's why you booked that room. Whatever that ghost was, it did not scare anyone nor did it harm them. That ghost lived peacefully there, that is why people bought that room. Well, but something different was going to happen to you, which would probably change the rules of the world.