The Sauroktones: El Pelú (The Sauroktones #4)

In the near future, the Earth has become a very different place. An unknown disaster has upended our way of life: cars sit rusting where they stopped, cities have been reduced to no man's lands, and invertebrates have mutated into giant, deadly beasts. Faced with the threat of these roaming monsters, humanity's hopes lie with the Sauroktones, small bands of warriors who risk their lives to fight these creatures. Amid it all, three youths are thrown together by circumstance, and will go to great lengths to stay united, help each other, and make their way through the strange, futuro-medieval landscape of a ravaged world.