A World Of Vampires

Blood is a critical resource to the vampire inhabitants of this future Earth - to the point that it's even added to coffee. With the human population dwindling day by day, the pressure is on to capture more or find alternative sources; worse still, the sewers are now haunted by monstrous Subsiders - the ultimate fate of those who can't afford the rising price of blood.

Example of:
Terminally Dependent Society