A scientific experiment gone wrong is unleashed upon an unsuspecting world. A retrovirus, able to crossbreed the genes of plants, animals and humans, is accidentally released, creating a world of horrific mutations. In just two days, ninety per cent of mankind have died; the rest are turned into hideous, murderous mutations. Only a few people seem immune to the virus and struggle to survive in a now hostile and constantly changing environment.

Tom Keller is one of them. Living alone on an abandoned rocket launch base near the Belgian border, he believes himself to be safe and isolated from the horror. But he soon learns his situation is more than critical. Using a satellite phone, he contacts other survivors who come to his base for safety and try to establish a normal life. But as the genetically modified organisms evolve, the survivors learn that the fence around the base is no longer protecting them. In fact, staying at the base makes them to prey to the ever-evolving mutants.

As the survivors take off to find a new shelter, they learn about a second catastrophe heading their way. Putting aside their fear, anger and grief, they head south – towards safety, towards hope, towards a new beginning for mankind …