The story takes place in a post-apocalyptic world where all animal meat is suddenly infected with a deadly virus. Those who hasn't died on the first days of the contagion, evolve to a new lifeform: The Carnivores. Addicted to all types of meats. And the only human survivors are those who haven't eaten any meat at all, the vegetarians. And they soon become prey to the Carnivores in a new and deadly ecosystem where only the fittest will survive. The Skeleton, leader of a small clan of "Herbivores", hear about the existence of a mythic book called "On the End of All the Species" which seems to be the cause for the unleashed hell on Earth. As they look for the book, they have to face, not only the Carnivores but a strange creature known as the Brainshatter. A seemingly evolved man that do not need to be carnivore nor herbivore.