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 the dawn of history, a valiant people forged a pathway from an old world into a new one. Led by a dreamer who followed the spirit of the wolf, a handful of courageous men and women dared to cross the frozen wastes to find an untouched, unspoiled continent.