From the publisher's download page description:
"Fin de siècle New York, 1913 - a city perched on the edge of the abyss. Modernity is at war with tradition, and automobiles uneasily share the roads with horse-drawn carriages. Change - sweeping, terrible change - is in the air, and all of Europe is about to be thrown under the bus, dragging the world down after it. But tonight? For now? Cars that can go forty miles an hour, women not ashamed to show off a little ankle, and as much opium as you care to smoke. In the dirty places labor is organizing, anarchists are murdering plutocrats, and children are going hungry. But it’s a pretty good world if you are on top of it, so find a way to get on top, fast..."
This playset draws heavily on real New York history, and includes an additional section of notes to provide more detail about some of the more colorful locations and organizations.