Amelia is a ripper, a monster who feeds on violent people who have so thoroughly forsaken love that they've burned away their souls. Unseen and unnoticed by most of society and living as both hunter and hunted, the only emotion rippers feel is anger. But Amelia is different from her fellow rippers and also feels happiness, sadness, fear, love and every other emotion. To her mother, Danjay, that makes Amelia the strangest of all monsters.

Driven from their home by religious zealots, Amelia and Danjay must learn to survive in the city of Medea, where violent men rule and kill anyone who opposes them. Worse, Amelia has never hunted on her own, and her mother is ill and growing weaker by the day. Only a chance encounter with a human who can see Amelia gives her any hope that she might be able to save her mother.

To succeed, Amelia must learn to hunt in an increasingly dangerous city brought to the brink of war by the corrupt, rich and powerful. Amelia will also have to discover if her differences from her fellow rippers makes her weak, as her mother believes, or if she can instead be a new kind of monster that the world has never seen before.