The world has no air.

Ever since the Switch, when the oxygen levels plummeted and most of humanity died, the survivors have been protected in a glass dome full of manufactured air. If you want to live, you pay to breathe. But what if you can't pay? And what if you think everything could be different? Alina's a revolutionary who believes the Resistance can save the environment, can break free, and she's on her first mission. Quinn's a Premium who's never had to worry about having enough air. His best friend, Bea, is an Auxiliary who's never worried about anything but having enough air. When all three cross paths and walk into the Outlands with two days' worth of oxygen in their tanks, everything they believe will be shattered.

Sarah Crossan is the author of the duology Breathe and Resist, as well as the acclaimed novel-in-verse The Weight of Water, which was short-listed for the Carnegie Medal. She spent several years living and teaching high school in New Jersey before moving to London, where she now lives with her husband and young daughter.

“An amazing story! Sit down. Inhale. Now, while you still can.” — Kathleen Duey, author of National Book Award finalist Skin Hunger

“This joins the ranks of Roth’s Divergent and Wells’ Partials as a provocative, character-driven, and action-packed dystopian series opener to watch out for.” — Bulletin of the Center for Children’s Books

“Short cliff-hanger chapters alternate between the three teens’ points of view and build to an ending that will leave fans breathless for the next one.” — ALA Booklist

“Sci-fi fans with an environmental bent will find this book particularly engaging.” — Horn Book Magazine