Philadelphia, 1837. On six occasions, twelve-year-old tomboy Rian Krieger has escorted self-emancipated fugitives to the next station on their flight from enslavement. When Rian's father, factory owner Otto Krieger, learns that she is a conductor on the Underground Railroad, he renews his plans to send her to a finishing school in Switzerland. This is a fate Rian cannot abide, as it means she would have to wear a dress all the time.
The Workshop of the World. Philadelphia bustles with commerce. The siren song of increased prosperity prompts Otto to make bold decisions. Then, the Panic of 1837 descends, strangling businesses and straining the social and economic fabric of the city. Otto's factory and home are at risk of foreclosure.
Otto's problems are potentially resolved when two visitors from Tsarist Russia enter his factory. Rian must decide: Can the Russians' mission help her solve her Switzerland dilemma as well?