It's been years since prostitutes Yuriko Hirata and Kazue Sato were murdered, but now Yuriko's unnamed older sister, who was also Kazue's classmate, is ready to share the girls' gruesome stories. How could two young women, both students at a prestigious high school, end up as prostitutes in the slums of Tokyo? Kazue was highly intelligent and self-motivated; Yuriko was "terrifyingly beautiful." Could the girls' deaths somehow be linked to Japan's hierarchal, ultra-competitive culture, or was it simply a matter of chance that they crossed paths with a sociopathic Chinese immigrant?