Sash and her family have lived in an underground bunker for 10 years, along with a few other families, after tragedy struck and the sunlight on the surface became toxic to them. They have been forced to abide by the very strict rules of Dr. Moran, who claims to know a lot about this above ground phenomena that has struck their town. She has requested they never touch, including family, and must always do as she says or else they could be placed in isolation as punishment. They are starting to run out of food and the bunker is starting to fall apart, which has Sash and her two friends, Gabe and Yuna, very worried. They end up finding a secret entrance to the bunker and want to go up to see for themselves what the world above is really like after ten long years, but if they are caught or if they stumble into an aboveground apocalypse they are not sure they can handle the repercussions. On the other hand, can they afford not to try?
Fans of survival stories will enjoy this title as the three teens struggle to find their place in this very small world that has been created for them in this underground bunker. It does not have the hope that some survival stories have, but at the same time does truly help the reader to feel what it would really be like to be in this position. There are some surprising plot twists as the three debate on what to do about their current situation and readers should be impressed with the attention to detail as they start to put the pieces together near the end.