Featuring the voices of Junko Iwao, Rica Matsumoto, Shiho Niiyama, Masaaki Okura, Shinpachi Tsuji and Emiko Furukawa, the plot follows a member of a Japanese idol group who retires from music to pursue an acting career. As she becomes a victim of stalking by her obsessive fan, gruesome murders take place, and she begins losing her grip on reality. The film deals with the blurring of the line between fantasy and reality, a commonly found theme in Kon's other works, such as Millennium Actress (2001), Paranoia Agent (2004), and Paprika (2006).