Book three of the Lunar chronicles, in which the author thought to herself "Gee, there is a dude in this story who is single, I'd better fix that." Enter Cress, an unsocialized "blonde" blonde (I have blonde hair, so this isn't meant to offend, it's just a stereotype), already madly in love with fugitive "Captain" Thorne, and the rubbish stories he made up to make it seem like he was a hero. Naturally, Cinder and her growing band of misfits go to pick up Cress, but something goes wrong for once and they become separated, all the while the clock ticks, counting down the days to Kai's wedding to the evil Lunar Queen Levana. It's a lot more complicated than that, but if you want more details, go read the books.
The series so far has been a decent one, though not great. Then again, I've been told that I find something wrong with everything I read. Oh, Well.