Seventeen-year-old Anglet Sutonga lives repairing the chimneys, towers, and spires of the city of Bar-Selehm. Dramatically different communities live and work alongside each other. The white Feldish command the nation's higher echelons of society. The native Mahweni are divided between city life and the savannah. And then there's Ang, part of the Lani community who immigrated over generations ago as servants and now mostly live in poverty on Bar-Selehm's edges. When Ang is supposed to meet her new apprentice Berrit, she instead finds him dead. That same night, the Beacon, an invaluable historical icon, is stolen. The Beacon's theft commands the headlines, yet no one seems to care about Berrit's murder--except for Josiah Willinghouse, an enigmatic young politician. When he offers her a job investigating his death, she plunges headlong into new and unexpected dangers.