The Twil Gate links two very different realms. On one side is Senal, an advanced civilization of thirty billion inhabitants, all cybernetically linked. On the other side is Irion, a land of myth and legend, where the world is flat and mighty wizards once ruled. Jedda Martele shares her people's assumption that Irion is backward and superstitious and no match for her homeland's superior numbers and technology. But as the two realms march toward war, Jedda finds herself at the center of events that will challenge everything she has ever believed about the world - and herself.