Born for war, war for bonds - that is the path for the Clones. How far would you go to do the right thing? Aurelia is fully entangled in the politics of the highly treacherous Lunar City. Head of Trauma at the hospital, she is in love with a member of the Elite, Jonathon, the secret leader of the Resistance but also the favourite candidate to become the next President. However, she is also friends with Nicholas, a Clone, a race of men who are barely recognised as people but more as tools, and she's finding her loyalties torn and senses danger everywhere. When her plan to save Nicholas goes awry, Aurelia must put her feelings for Jonathon to one side and rescues her friend, which means going "Out": beyond the dome surrounding Lunar City into the vast, unbreathable atmosphere of the moon. But can she survive alone in the unknown out there and how will she find Nicholas and bring him back safely? Aurelia is about to test her strength, heart and cunning in this dramatic second book of the Numbered series.