The world is devastated in an unprovoked invasion, and left a smoldering ruin. One hundred fifty years later, Mark and Kat survive in the ruins by scavenging and trading. Their lives are upended when a village they are staying in is attacked and destroyed, and the villagers abducted. They set out seeking weapons powerful enough to confront the enemy, and rescue their friends. And if Kat has her way, whatever they find will be big, strange, and preferably pink.