Known now as Arks, each has developed in distinct ways; each seems to possess its own unique relationship to time, such that nowadays vastly different worlds exist, together but apart. And over all of the Arks the spirit of an omnipotent ancestor abides. Ophelia lives on Anima, an ark where objects have souls. Beneath her worn scarf and thick glasses, the young girl hides the ability to read and communicate with the souls of objects, and the power to travel through mirrors. Her peaceful existence on the Ark of Anima is disrupted when she is promised in marriage to Thorn, from the powerful Dragon clan. Ophelia must leave her family and follow her fiancée to the floating capital on the distant Ark of the Pole. Why has she been chosen? Why must she hide her true identity? Though she doesn’t know it yet, she has become a pawn in a deadly plot.

    It doesn't matter that the girls often die from the mental strain. When 18-year-old Zetian offers herself up as a concubine-pilot, it's to assassinate the ace male pilot responsible for her sister's death. But she gets her vengeance in a way nobody expected—she kills him through the psychic link between pilots and emerges from the cockpit unscathed. She is labeled an Iron Widow, a much-feared and much-silenced kind of female pilot who can sacrifice boys to power up Chrysalises instead.​ To tame her unnerving yet invaluable mental strength, she is paired up with Li Shimin, the strongest and most controversial male pilot in Huaxia​. But now that Zetian has had a taste of power, she will not cower so easily. She will miss no opportunity to leverage their combined might and infamy to survive attempt after attempt on her life, until she can figure out exactly why the pilot system works in its misogynist way—and stop more girls from being sacrificed.