The Earth in Hyperthought has been mostly destroyed with people living underground or in domes. The north is controlled by powerful corporations while the south is free. In the south Jolie Sauvage runs a business acting as a tour guide for rich northerners. She meets Jin, a handsome movie star and son of one of the corporation CEO's. She falls for Jin, but he leaves for California to have experimental surgery on his brain. Nanobots are inserted into his brain to help expand his thought processes so he can understand the universe. Jolie comes to believe he is in trouble and mounts an impossible rescue.
The plot sounded exciting, but unfortunately for me it wasn't, mostly because the eponymous 'hyperthought' is barely touched upon. It's more of an adventure novel detailing Jolie's activities as a tour guide, revolutionary and finally, rescuer. The characters are not given much depth and that includes Jolie. This book is under 200 pages but I had to force myself through it. It's certainly not badly written, it just never caught my interest and in the end, the science fiction content was too light.