When X—an iconoclastic artist, writer, and polarizing shape-shifter—falls dead in her office, her widow, CM, wild with grief and refusing everyone's good advice, hurls herself into writing a biography of the woman she deified. Though X was recognized as a crucial creative force of her era, she kept a tight grip on her life story. Not even CM knows where X was born, and in her quest to find out, she opens a Pandora's box of secrets, betrayals, and destruction. All the while, she immerses herself in the history of the Southern Territory, a fascist theocracy that split from the rest of the country after World War II, and which finally, in the present day, is being forced into an uneasy reunification.