In the fantastical, gaslit underground city of Recolleta, Oligarchs from foreign states and revolutionaries from the farming communes vie for power in the wake of the city's coup. The dark, forbidden knowledge of how the city came to be founded has been released into the world for all to read, and now someone must pay.

Inspector Liesl Malone is on her toes, trying to keep the peace, and Arnault's spy ring is more active than ever. Has the city's increased access to knowledge put the citizens in even more danger? Allegiances change, long-held beliefs are adjusted, and things are about to get messy!