Time is running out. As the Great Flood threatens to consume the silo, Ace and a team of divers are in a desperate battle to avert disaster. When a terrible accident destroys the person he cares about most, Ace has little left to live for. After nearly succumbing to the silo's flooded depths, Ace realizes that drastic measures must be taken in order to save their underground home. But those in charge deem his ideas too dangerous, his methods too forbidden, and he is shunned for his sin of toxic words.
"Very impressive addition to Howey's Wool universe!"
They escaped a ruined Earth, barely staving off extinction. Two-hundred years after arriving on the beautiful and bizarre planet of Taran, humanity is thriving once again. Until now…When famous scientist Cassidy Walker uncovers evidence that the planet is teetering on the brink of disaster - a catastrophe that mankind will not walk away from - the countdown to the next great challenge in human history begins. And they might not survive this time.