Charlie Robinson is a quantum physicist who gave up his quest to build a time machine, filed his notes away, and then dropped out to start a science-based church. He is soon contacted by time-travelers from the future who claim to be his disciples, and to have fabricated his device. Jay Bracken is a genetically engineered 24th Century time-hunter pre-based in the late 20th Century; a deep retrieval asset overdesigned to thrive in low tech environments, and believes he is a dumb jock from West Virginia. Daniel London, hardnosed ER surgeon facing his greatest test; providing health care for a stone-age society on the brink of military and biological holocaust... Three-Rivers is a visionary of the Longhouse-people. When an insane white savage comes into Mother Earth seeking He-who-makes-rivers Three-Rivers meets him by chance above the Shellfish-water. This Whiteman is possessed by a potent flesh-demon, brings dread warnings of evil invaders, and has been sent into the world by a thunder-conjurer from a mysterious place beyond the very Sunset. Three-Rivers simply must see this wonderful Sunset World