Steampunk Fay underground

I haven't written anything in a long time, but last night I dreamt I was in this metropolis, like Chicago or New York, with highways and railroads everywhere. It was 1910s or 1920s I think, somewhere in very early 20th century. Right on this corner on this busy intersection, I'm staying in a ritzy hotel. While there, I discover an entire underground tunnel complex inhabited by elves, goblins and trolls who staff the hotel in human form. In the maze of tunnels I find whole living communities, farms and gold mines. They try to keep me prisoner from escaping into the world and telling anyone this Fay community exists, but I end up escaping and hide out like a refugee thanks to a sexy, silver daddy werewolf. I don't know what story to make out of this, but it's almost like Narnia meets Harry Potter!