Lena has to face a future she never wanted. Alex has to face the past he buried deep. The revolution could bring them closer or separate them forever. Forced from her home in the desert, Lena Gracey joined the Spark revolution. She saved a group of powered girls and enjoys a maddening partnership with double agent Alex Reyes. She thought the future was set. But by the end of the summer, she faces conspirators within the movement ready to strike against her and discovers the Dust is somehow evolving. With the Council issuing warrants against her, it's time for her to do what she does best. She'll take her girls and go rogue in the high desert of Zone Three. Alex Reyes knew his role in the revolution: the bad man, willing to do bad things for the good of Sparks. He never expected Lena Gracey. He never expected she'd uncover feelings long buried...including his conscience. Facing suspicion from every corner, there's no time for soul-searching. His mission to the eastern Zones will make or break the movement. Mysterious, powered young men are tracking him. He's got to work the angles, charm the willing, and force the hands of everyone else. And the Dust is ready for her to wake...