In a world where disease has been eliminated, the only way to die is to be randomly killed (gleaned) by professional reapers (scythes). Citra and Rowan are teenagers who have been selected to be scythe's apprentices, and despite wanting nothing to do with the vocation they must learn the art of killing and come to understand the necessity of what they do. Only one of them will be chosen as a scythe's apprentice. And when it becomes clear that the...

"Citra and Rowan have disappeared. Endura is gone. It seems like nothing stands between Scythe Goddard and absolute dominion over the world scythedom. With the silence of the Thunderhead and the reverberations of the Great Resonance still shaking the earth to its core, the question remains: Is there anyone left who can stop him? The answer lies in the Tone, the Toll, and the Thunder"--

In a future world where those between the ages of thirteen and eighteen can have their lives "unwound" and their body parts harvested for use by others, three teens go to extreme lengths to survive until they turn eighteen.