Yuki gets an unsettling phone call after a night of casual sex with her friend Jun informing her that her brother Taka has died. The official cause is malnutrition, but for some reason a pool of blood was found near his body. Deciding to investigate further, Yuki searches Taka’s apartment and finds a vacuum cleaner—something he wouldn’t need for his wooden floors. When she returns to the city she feels kind of strange. Not only is her sense of smell drastically heightened, but she also has developed some sort of sixth sense. She visits her psychologist friend to get on the bottom of it, but her memories hold disturbing secrets.