Adoras fierce independence makes her a target for the self-proclaimed Guardians, who are but one group of Humiens--aliens genetically engineered to look like humans. Now able to hide their identities and live among humans on Adoras planet, the Guardians in government are capturing humans as test subjects for their genetic engineering experiments to convert humans into their own breed of citizens. Adoras only protection from the Guardians must come from Zane, whose unnatural magnetism she cant deny, and who, unknown to Adora, is also a Humien. As a member of the Luxurs, whose enemies are the Guardians. Zane must reveal his identity as a Humien and must convince independent Adora to put herself under his protection. Amid her reluctance to believe that she may be living among aliens, Adora resists Zanes protection because it would mean relinquishing her freedom, even in order to save it. Yet Adora struggles between her insatiable quest for knowledge about the history of the Guardians and the strategies they use and her own vulnerability if she fails to keep her independent nature under the radar.