In the long history of our Earth, terrible cataclysms periodically occurred, when almost all life on the planet died and disappeared. And then the evolution of the flora and fauna of the Earth followed a completely different, new path. Scientists have called these disasters “mass extinctions” and count five such events. Many experts are convinced that the Earth will soon face another, sixth extinction. The Sigma Group, led by its director Painter Crowe, stands on the side of those who are striving with all their might to prevent a new collapse - or at least delay it. But there are also people who, on the contrary, want to bring the sixth extinction closer so that, having cleared the planet of all unnecessary things, they can begin building the world anew. And these supporters of extinction have prepared a terrible surprise for all life on Earth...