World War Z is a pre-existing book which is about an post apocalyptic zombie invasion.
The concept behind the illustration I have drawn is that a mother and her child are on the run, with the daughters hope of survival depends on her mothers strength and comforting words; however the mother has been bitten by zombie and the disease is spreading as she struggles to fight the urge to turn on her daughter.
I decided to capture this for my illustration as I believe emotions are more powerful than viewing destroyed buildings, and a mother turning on her child is the most powerful way of portraying an evil world.