For all the mysteries teen hacker Marisa Carneseca has solved, there has been one that has always eluded her: the truth behind the car accident in which she lost her arm and a mob boss’ wife, Zenaida de Maldonado, lost her life. Even in a world where technology exists to connect everyone’s mind to one another, it would seem that some secrets can still remain hidden.

Los Angeles in 2050 is a city of open doors, as long as you have the right connections. One of those connections is a djinni—a smart device implanted right in a person’s head. In a world where virtually everyone is online twenty-four hours a day, this connection is like oxygen—and a world like that presents plenty of opportunities for someone who knows how to manipulate it.

Marisa Carneseca is on the hunt for a mysterious hacker named Grendel when she receives word that her amateur Overworld team has been invited to Forward Motion, one of the most exclusive tournaments of the year. For Marisa, this could mean anything—a chance to finally go pro and to help her family, stuck in an LA neighborhood on the wrong side of the growing divide between the rich and the poor. But Forward Motion turns out to be more than it seems—rife with corruption, infighting, and danger—and Marisa runs headlong into Alain Bensoussan, a beautiful, dangerous underground freedom fighter who reveals to her the darker side of the forces behind the tournament. It soon becomes clear that, in this game, winning might be the only way to get out alive.