In a world where vampires ruled the world instead. Humans are treated to as a second class citizens, pets or personal property. In this world, you work as a courier who has to drop off some items for the most dangerous covens in the city, the Sleep Boy's Inc. As a human, humans are only permitted to enter high vampire districts as couriers or servants, and each was well documented and tracked. A service number was written in bright blue letters across the back of your barcoded jacket.