Claire is not interested in supernatural phenomena. She considers herself a scientist and that is why she does not want to help her father on one of his bus tours of places in Chicago where ghosts have ever been encountered. However, during the trip she meets a sad boy, he looks like a guest from the past, like a ghost. At first the girl decided that it was just her imagination. But then she, being all alone in the room, heard a strange scratching sound - SCRATCH-SCRAP! Could it be that same ghost boy is haunting her? Claire is scared and decides to find out what's going on at all costs.