I love Cinderella retellings and this sci-fi one is very unique in terms of Cinderella tales. Imagine a future where androids and cyborgs co-mingle with humans. Hover cars and ID chips imbedded in people and all that. Cinder is a cyborg mechanic who meets the prince when his android needs repair. He is throwing a ball but Cinder's stepmom treats her as a slave and won't let her go, of course; but bigger conflict comes from the Lunars who threaten war against Earth; also there's a pandemic going on. This is part one of the Lunar chronicles.