Once she was a powerful Djinn. Then Cassiel defied her ruler, Ashan, who tore her very essence away and reshaped her in human flesh as punishment. Forced to live among mortals, Cassiel has found refuge among the Weather Wardens—whose power she must tap into regularly, or she will die. Cassiel earns her keep by assisting the Earth Warden Manny Rocha on his missions—which she finds much easier than coping with the emotions and frailties of her human condition, especially her growing affection for Manny's brother, Luis. But when Cassiel encounters a malevolent force that threatens the Rocha family, she discovers that her perceived human weakness may be her greatest strengths...

Living among mortals, the djinn Cassiel has developed a reluctant affection for them—especially for Warden Luis Rocha. As the mystery deepens around the kidnapping of innocent Warden children, Cassiel and Luis are the only ones who can investigate both the human and djinn realms. But the trail will lead them to a traitor who may be more powerful than they can handle...

After Cassiel and Warden Luis Rocha rescue an adept child from a maniacal Djinn, they realize two things: the girl is already manifesting an incredible amount of power, and her kidnapping was not an isolated incident. This Djinn—aided by her devoted followers—is capturing children all over the world, and indoctrinating them so she can use their strength for herself. With no other options, Cassiel infiltrates the Djinn’s organization—because if Cassiel cannot stop the Djinn’s apocalyptic designs, all of humanity may be destroyed.

For millennia, Cassiel was a powerful Djinn—until she was exiled to live among mortals. Now the threat of an apocalypse looms, and Cassiel is in danger of losing everything she has come to hold dear... As the world begins to fall apart around her, Cassiel finds herself fighting those she once called her own: the Djinn. With Weather Warden Luis Rocha and the rescued child Ibby by her side, Cassiel struggles to find a way to protect those who are in her charge and come to terms with the leadership role she never asked for. Cassiel is opposed by Pearl—a powerful Djinn bent on raising an army of kidnapped Warden children to bring about nothing less than the end of the world. It will take everything Cassiel has to stop the Djinn from starting a war that will wipe all of humanity from the face of the earth. She knows that this might not be a battle she can survive, but protecting those she loves is worth any cost...