Ribo Quadrilobe is a Government Investigator. He is also one of the most advanced robots. He will study a case, take notes, come to a conclusion and pass that conclusion on to a Judge. That Judge will always accept the findings of these advanced robots because they are so thorough and always come to the same conclusion as a would a Judge.

In this era, some Robots are trying to become Human. Ribo is not one of those. He thinks there is nothing better than being a Robot. There are plenty of jokes in this book. But, they're wasted on Ribo.

Hannah Harvester is a Medical Doctor. She is also a Spiritual Healer. A lot of her patients get well, almost miraculously. But, it's forbidden to practice spiritual healing on medical patients.

So, Ribo Quadrilobe is sent to investigate. Read the book to follow the investigation.