Deirdre lives for one purpose: to get her sister back. Riding her Soul Horse, Danny, she relentlessly pursues the kidnappers through an America wrecked by the Great Virus, endless civil war and a collapse of the global order called the Breakdown. She's forced by circumstances to ally with a nomadic photographer. His gentle decency moves her to the core, but her mission leads her away from the man she's falling in love with and toward a confrontation with the people who hold her sister. To defeat them, she'll need the help of the powerful Nations, a league of indigenous tribes. But there's a problem. The Nations consider Deirdre a deadly enemy. They've even given her a nickname that signifies their grudging respect for this ferocious adversary. Crazy Hawk.