This volume comprises The Cassini Division and The Sky Road.

The Cassini Division: In the 24th century, post humans, god-like descendents of humans who transformed themselves with high technology, have warped the very fabric of the solar system for unknowable reasons. Ellen May Ngewthu has a plan to rid humanity of these beings, but she must first travel the entirety of the Solar Union, convincing others that post-humans are the threat she knows they are...

The Sky Road: Her rockets redundant, her people rebellious, and her borders defenseless against the Sino-Soviet Union, Myra Godwin appeals to the crumbling West for help as she faces the end of the space age. And, centuries in the future, as humanity again reaches into space, a young scholar could make the difference between success and failure. For his mysterious new lover has seduced him into the idea of extrapolating the ship's future from the dark archives of the past.