Seventy thousand years ago, the human race almost went extinct. We survived, but no one knows how.

Until now. The countdown to the next stage of human evolution is about to begin, and humanity might not survive this time. The Immari are good at keeping secrets. For 2,000 years, they've hidden the truth about human evolution. They've also searched for an ancient enemy - a threat that could wipe out the human race. Now the search is over.

The ice is coming. It was the last thing we expected, but the world is freezing. A new ice age has dawned. Billions have fled the glaciers. A cataclysmic war is coming. In orbit, a group of scientists are running the Winter Experiments, a last-ditch attempt to understand why the planet is cooling. None of the climate models they build make sense. But then they discover an anomaly, an unexplained variation in solar radiation...and something else. Close to the burning edge of the sun, they catch a fleeting glimpse of something that shouldn’t be there....

Mandera, im Nordosten Kenias: Die X1-Mandera-Pandemie breitet sich wie ein Flächenbrand aus - und ist kein biologisch-evolutionärer Zufall. Berlin: Ein Mann erwacht in seinem Zimmer im Concord Hotel und hat das Gedächtnis verloren. Mit ihm im Raum befinden sich die Leiche eines ihm unbekannten Mannes sowie ein Zettel mit einem seltsamen Code darauf. Atlanta: Die Ärztin Peyton Shaw wird von den kenianischen Behörden kontaktiert, um sich der mysteriösen Seuche anzunehmen. Sie findet heraus, dass ein ganzes Kartell geheimnisvoller Firmen, Institutionen und Organisationen die Pandemie mit einer finsteren Absicht steuert.

In Atlanta, Dr. Peyton Shaw is awakened by the phone call she has dreaded for years. As the CDC's leading epidemiologist, she's among the first responders to outbreaks around the world. It's a lonely and dangerous job, but it's her life - and she's good at it. This time she may have met her match. In Kenya, an Ebola-like pathogen has infected two Americans. One lies at death's door. With the clock ticking, Peyton assembles her team and joins personnel from the Kenyan Ministry of Health and the WHO.

En route to London from New York, Flight 305 suddenly loses power and crash-lands in the English countryside, plunging a group of strangers into a mysterious adventure that will have repercussions for all of humankind. Struggling to stay alive, the survivors soon realize that the world they've crashed in is very different from the one they left. But where are they? Why are they here? And how will they get back home?