In a parallel Earth, known as "Gaia", mathematician Patricia Vasquez (the primary protagonist of "Eon"), dies of old age; she never found her own Earth where the Death did not happen and her loved ones were still alive, but remained on the one she discovered (in which Alexander the Great did not die young and his empire did not fragment after his death). She passes her otherworldly artifacts of technology to her granddaughter, Rhita, who appears to have inherited her gifts. Rhita moves away from the academic institute the "Hypateion" (a reference to Hypatia) which Patricia founded and that world's version of Alexandria. Patricia's clavicle claims that a test gate has been opened onto this world of Gaia, and that it could be expanded further.