After inheriting the family fortune, eleven-year-old Masaru Saiga is targeted by kidnappers armed with bizarre and deadly puppets. He escapes once aided by circus employee Narumi Kato, but the kidnappers soon catch up with them. Just when all seems lost, the two are saved by the mysterious Shirogane who wields her own marionette. From then on, the trio’s fates become inexorably intertwined...