Alessia is an Outsider—a member of the not-quite-human community that has recently been released from their underground prison. Shortly after their liberation, Alessia is given an ultimatum: obey all the United Earth Alliance's demands, or her mother will forever remain a hostage—a mother she'd believed dead for fifteen years. Reluctantly, she agrees, though she has no idea what those demands may be or how she will balance her obligations to the UEA with her responsibilities to her people and her family.
As the UEA tightens its grip on humans and Outsiders alike, it becomes clear that meaningful social change will not be possible without a revolution. Alessia and her peers embark on a mission to discover just how far the government is willing to go to maintain their monopoly on power.
What Alessia and her comrades discover, however, goes much deeper than they'd ever anticipated. Who are the Outsiders, really? What secrets of their destiny lay hidden within a top-secret space station? And why are the Outsiders linked to an emerging disease the UEA seems desperate to keep secret? As they delve deeper, it isn't only Alessia's identity that will be called into question, but the fate of the entire planet.