A killer is on the loose and Dr. Kenzo Tenma is the only one who can stop him. Tenma goes to Prague and meets up with an investigative reporter who is tracking a former director of the 511 Kinderheim orphanage. They try to find out if the terrible experiments that took place at 511 Kinderheim are being recreated in the city of a hundred spires.

This book reads from right to left.