Kate is desperate for answers about her Gift after it destroyed a Fallen Guardian's Gift. Her supernatural ability could revolutionize the war between Guardians and Fallen and save lives, but only if she can accept the agonizing consequences of what it does. The more she learns about her Gift, the more Kate fears that someone she loves will pay the price. The last thing she wants is to put the Guardians at risk, especially now that her relationship with Hassan has taken an unexpected turn.

As Nathan reveals his troubled history with Eden, the Guardians worry about the impact it will have on their search for the dark and powerful Fallen Guardian Haddai. Haddai's plan promises to be unlike anything they've dealt with before and could have devastating results for the Guardians. When they realize they aren't as hidden as they thought, Kate is pushed toward the moment she's been dreading—she'll be forced to use her Gift and discover if it's a blessing or a curse.