Overview

When the Yellowstone supervolcano erupts, the world ends in ash and fire. For Harper Vega, it's just the beginning.

Former Army medic Harper Vega is leading a wilderness survival course when the unthinkable happens—Yellowstone explodes in the largest volcanic eruption in human history. As ash clouds blot out the sun and civilization collapses, Harper finds herself responsible for keeping a group of strangers alive in a poisoned wasteland.

But she's not alone. Quinn Marshall, a brilliant geologist haunted by loss, becomes Harper's unlikely partner in a desperate journey toward the Canadian border.

Together, they must navigate not only the deadly landscape of volcanic ash and roving militias, but also their growing feelings for each other in a world where tomorrow is never guaranteed. As they lead their dwindling group of survivors through the gray wasteland that was once Montana, Harper and Quinn discover that love can bloom even in the aftermath of apocalypse—and that sometimes the end of the world is really just the beginning of something worth fighting for.