But when his mother is caught up in the slaughter of a fledgeling resistance group, Rydian’s entire family is thrown into infamy. His fellow humans brand him traitor, while the Alfur hail his mother a hero. Desperate to clear his name, Rydian must delve into his mother’s past, and the secrets she sought to uncover. Secrets about the Alfur, about their alien technology—and the mysterious Light that powers their world.