Striking out into the wasteland with nothing but her baby sister, a handful of supplies, and a rumor to guide her, sixteen-year-old midwife Gaia Stone survives only to be captured by the people of Sylum, a dystopian society where women rule the men who drastically outnumber them, and a kiss is a crime. In order to see her sister again, Gaia must submit to their strict social code, but how can she deny her sense of justice, her curiosity, and everything in her heart that makes her whole?