With the human population ravaged by a series of devastating plagues, the alien Chtorr arrive to begin the final phase of their invasion. Even as many on Earth deny their existence, the giant wormlike carnivores prepare the world for the ultimate violation--the enslavement of humanity for food!

McCarthy was drafted from his college biology studies and became a member of the Special Forces. Then he is given the opportunity to contact the Chtorr, but when a helicopter crash leaves him and his companions stranded in enemy territory, he must decide whether to communicate with the Chtorr--or kill them!

As tenacious aliens transform the war torn Earth into a replica of their own terrifying world, a handful of scientists, soldiers, and citizens prepares to fight back