Servants of the Empire: Rebel in the Ranks is the second installment in the young reader tie-in series to Star Wars Rebels. The first book, Edge of the Galaxy, introduced us to Zare Leonis, his sister Dhara, and soon-to-be girlfriend Merei Spanjak in the year before Zare entered the Imperial Academy on Lothal. Rebel in the Ranks picks up the story with Zare as a new Imperial cadet and follows him as he tries to learn the truth about what happened to his sister. Along the way he meets another cadet who has no love for the Empire.