Picking up eight years after the events of Blast Radius, Sovereign completes the story of a sister and a brother at mortal odds in a radically changed Earth. The alien race that has ruled the Earth has fallen to Ronnie's rebellion, with the few remaining survivors on the run. The human race is slowly rebuilding all over the world. Ronnie is now the battle-scarred Governor of what used to be Florida, everyone's hero and no one's friend. Until one night, when Ronnie's soldiers smuggle into