One thousand years in the future, the zyme, a thick blanket of luminous green slime, covers the oceans. Glaciers three-miles-high rise over the continents. The old stories say that when the Jemen, godlike beings from the past, realized their efforts to halt global warming had gone terribly wrong, they made a desperate gamble to save life on earth and recreated species that had survived the worst of the earth's Ice Ages. Sixteen-summers-old Lynx and his best friend Quiller are members of the Sealion People - archaic humans known as Denisovans.

For anthropology graduate student Sam Delgado, headed to the wilds of Wyoming, this is his last chance to save his graduate career. He and his urban classmates see this as the adventure of a lifetime: They are going to horse-pack in the wilderness to map and test a high-altitude archaeological site. Until a cyber-attack collapses the American banking system, and an already fractured nation descends into anarchy and chaos. 

1812 Missouri fur trade - An intimate of the Burr conspiracy, the condemned and hounded John Tylor signs on as boatman with Manuel Lisa’s expedition. But the river is now contested as the British, Spanish, and other fur companies prepare to break Lisa’s hold. As the expedition battles its way up the violent river, Fenway McKeever lurks in Tylor’s shadow. Not only is the half-mad McKeever paid to kill Tylor, but he’s convinced himself that by destroying Lisa’s expedition, he can sell his services to the highest bidder.

The seas flood their banks. Storms devastate entire continents. Fires envelop the world in darkness. The collapse begins...Anthropologist Anika French makes an explosive discovery: Due to climate change, our world is threatened with collapse in just a few years, and humanity will perish. Anika’s committee chair published her work under his own name, now powerful people will do anything to obtain Anika’s statistical program for their own use.

In a magnificent, war-torn world cut by soaring red canyons, an evil ruler launches a search for a mystical artifact that he hopes will bring him ultimate power - an ancient witch’s pot that reputedly contains the trapped soul of the most powerful witch ever to have lived. The aged healer Tocho has to stop him, but to do it he must ally himself with the bitter and broken witch hunter, Maicoh, whose only goal is achieving one last great kill.