Simon Marayam has left earth, sere and dessicated, to become a consular official on a distant planet. His linguistic skill has enabled him to master the language and culture of twentieth century America, a society whose mores have been reproduced in all their imperialistic violence and jingoism on a world where the aboriginal inhabitants have undergone extreme enhancements to appear human. Few have had more surgery and chemical additives than Katharine Styreme who has become the epitome of a flawlessly beautiful and talented teenager.
When revolution threatens, Simon and Katharine are at a party when they are taken hostage. But the hoped-for exchange vanishes when the prisoner they were to be swapped for is murdered. They find themselves relying on the erratic Kiyungu priest, Martin Cohen - a man who is able to understand the language of the "demons" - the giant and alien homo coelestis, Celestial Man - who feed on pain and who are both the masters and slaves of the aboriginal peoples.
Without her drugs, Katharine is reverting in spurts and jerks to something other than human. Simon, sexually and emotionally entangled with her, is blinded by his own needs to the emerging changes in relationship as they seek safety by heading for the dark road crossing the ice to Shackleton Station.
A complex and subtle exploration of condescension, exploitation, colonialism, bigotry, manipulation and cultural misunderstanding.