Cinder Kai Thorne Cress Winter Jacin & Scarlet basically plan to start a revolution and kill Levana. they gather allies there, and the whole book takes place mostly on Luna. It all ends happily ever after (i'm pretty sure..)
Winter is the step daughter of Lavanna and refuses to use her "gift" so she has halusinations due to the fact that she beleive that the people shouldn't be controled but should have the ability of free will. Lavanna is becoming paranoid that someone will take her crown so she becomes more evil and makes all kinds of ruthless decisions. The whole book is a cat and mouse game of will Cinder and her freinds be able to overthrough Levanna. Just like in real life nothing goes to plan so the whole book becomes basically a plan B. I think this one is better than Cress, which I loved.