Naphtali has spent two years hunting the people who murdered her family. When she finally corners one of them, a vigilante group intervenes and forces her into their ranks, exploiting her ability to turn invisible.
As she struggles against the people controlling her, an extremist cult called Purity that hunts aberrants-people with supernatural powers-puts a target on her back. Surrounded by enemies, betrayals, and impossible choices, Naphtali must decide who, if anyone, she can trust before vengeance costs her everything.
Indoctrinated by Purity to believe aberrants are a plague on humanity, Gideon serves as one of the cult's assassins. But when he's ordered to murder an innocent mother, the convictions that shaped his life begin to unravel. If he refuses to obey, Purity will make those he loves pay the price. If he complies, he'll have to continue living as the monster believes he is.
As their paths collide, neither will escape unchanged.