Ponter Boddit, a Neanderthal physicist from a parallel Earth, and his lover, geneticist Mary Vaughan, are torn between two worlds, struggling to find a way to make their relationship work.
Caitlin Decter, a young and attractive math genius who is blind, follows the pathways of the Internet in her mind, and when she receives an implant to restore her sight, she visualizes the World Wide Web all around her and realizes that a new intelligence lurks in the background.
