Write a story, book or game about a city besieged by sky pirates. Great zepplins launch squadrons of biplanes to assault the city, strafing the streets with machinegun fire and dropping bombs on the populace. Leather helmets and goggles peer down on the city and evil grins curl beneath swarthy moustaches. The pirates have blockaded the supply routes and terrorize the city night and day. The dread sky pirate captain holds council in his black dreadnaught zepplin and plots the downfall of this city. Where have the pirates come from? Why does the pirate captain hate the city so much? What can the city do to stop him? What has happened to the city’s own airforce? What wealth does the city control for the pirates to steal? Or is someone else pulling the strings of the sky pirates?