Leah feels human, but she's actually a "Wit"—her brain is the host of an organic processing unit that regulates her actions and emotions. As part of the lowest subclass of society, she submits to a human handler who owns her, body and mind. De Leon is the rising star of the Copy Leagues, a no-holds-barred fighting organization for genetically altered and technologically augmented Wits. His past is dark and his future uncertain, but with enough wins, he just might be able to break free of his bondage to his trainer and enjoy life as a citizen of New Dallas. Neither of them expected to fall in love, but when her handler begins to bring Leah to the fights, a secret and dangerous relationship blossoms, one that threatens both of their lives.