In Logan Ortega's dystopian world, angels and vampires have a bloody history, and humans are at the bottom of the food chain. When the Izel, a species of half-vampire, half-angels, are completely massacred by the vampires-or so the angels claim-tensions are high, which means humans are in even more danger. Logan knows this well-and has rarely known a day without fear. When she was a child, vampires killed her mother and took her father, orphaning her and her older brother. Her brother always had a plan to set out beyond the safety of their human city to seek revenge, but when he leaves without her, Logan decides she must face her fears and follow, or else forever live without knowing his fate. In her travels, Logan stumbles upon Cade, an Izel survivor. They strike a deal to travel together, if only so they don't have to be alone.

Amber Blue, an angel, fears her best friend, Cade, has died along with the rest of the Izel in the massacre. But when she can't find his body scattered among the remains, she decides to take matters into her own hands and investigate, only to end up captured by the vampire king and taken to his stronghold. As Logan and Cade search for her brother, Amber attempts to resist the kings's charms as they all discover the mystery of the Izel's demise is more sinister than they can imagine, and each of them has a part to play.