When the local Sheriff abducts the adult members of her family and hands her mother over to the Breeders, Riley and her eight-year-old brother, Ethan, hiding in a shelter, are left to starve. Then Clay arrives, the handsome gunslinger who seems determined to help to make up for past sins. The problem is Clay thinks Riley is a bender-- a genderless mutation, neither male nor female. As Riley's affection for Clay grows she wonders can she trust Clay with her secret and risk her freedom?
The three embark on a journey across the scarred remains of New Mexico-- escaping the Riders who use human sacrifice to appease their Good Mother, various men scrambling for luck, and a deranged lone survivor of a plague. When Riley is shot and forced into the Breeder's hospital, she learns the horrible fate of her mother—a fate she'll share unless she can find a way out.