First off: BEST and most creative story tale retelling EVER. It was so different unique on it's own. There were obviously some Cinderella hints thrown in there but with so many major plot twists of it's own. Such as.....Cyborg Cinderella! Cyborgs you have to know and understand are a fictional being with both organic AND biomechatronic parts. Meaning though she has mechanical and computer hardware inside her body she still has the mind of a human (which many people in this era do not understand). 
 She lives with her guardian (step-mom) and step-sisters Pearl and Peony. Peony, fourteen, is actually a semi-nice step-sister in this story! Plot twist! She talks to Cinder about how her mother brings them down and is Cinder's only human friend. (view spoiler)[ Then of course her only nice sister would get taken away because she contracted the plague. (hide spoiler)] 
 The lunars are a society that lives on the moon with unnatural powers apparently. So not only does Cinder deal with an evil step-guardian but there's a freaking evil queen out there too! They can pretty much make you hallucinate and see/do whatever they want you to do because of their evolution. Their Queen is EVIL and wants to take over the commonwealth people on Earth. What she doesn't know though is that the only person capable of taking over her throne is still alive.