Manuela Azul has been crammed into an existence that feels too small for her. As an undocumented immigrant who's on the run from her father's Argentine crime-family, Manu is confined to a small apartment and a small life in Miami, Florida.

Until Manu's protective bubble is shattered.

Her surrogate grandmother is attacked, lifelong lies are exposed, and her mother is arrested by ICE. Without a home, without answers, and finally without shackles, Manu investigates the only clue she has about her past—a mysterious "Z" emblem—which leads her to a secret world buried within our own. A world connected to her dead father and his criminal past. A world straight out of Argentine folklore, where the seventh consecutive daughter is born a bruja and the seventh consecutive son is a lobizón, a werewolf. A world where her unusual eyes allow her to belong.

As Manu uncovers her own story and traces her real heritage all the way back to a cursed city in Argentina, she learns it's not just her U.S. residency that's illegal. . . . it’s her entire existence.