Luna is an immortal entity in the Upperworld learning how to assign human souls to the body and life they’re intended for. Onyx is her mentor and guide there, teaching her everything she needs to know about assigning souls and dispatching them to Earth.  

Everything goes well until Luna’s friend makes a major mistake and Luna is sent to earth after covering for her. In her absence, an unbelievable secret is revealed that changes everything she thought she knew about how the world works. 

Will Luna survive long enough on Earth to fix things? Or will she succumb to the pressures and pitfalls of living life as a human girl before the entire system unravels?