This book is bleak. Bleak, bleak, bleak. A year ago, an asteroid knocked the moon out of orbit and earth is now a postapocalyptic wasteland. The food supplies are running low-to-nothing, there is no sunlight to grow new food by, scavenging is still paying off but much less, more mouths show up to feed, and then worse happens. This book combines the protagonists of the 2 previous books in a teen romance that also feels desperate and bleak. They are going through a volcanic winter with no end in sight. It seems like inevitably everyone is going to die, but they don't--at least not in this book. Just some of them die.