When the outbreak first happened everyone thought it was a controlled situation, they were wrong. The virus spread quicker than any disease known to man. It killed the brain and then reanimated the body, filled only by basic animalistic Instinct they began to feed and turn others into what many people believed to be a myth, zombies.
Many 'safe' havens were set up throughout the world. People flocked to them like moths to a flame which only help to spread the virus quicker. Two of the worst instances is New York and Atlanta.
Two months after the outbreak and the human race is all but gone. Only a handful of people survived the beginning and those people must now fight for survival.
Kill the dead, fear the living.
That's the creed that many survivors live by. Trust only your group and be wary of strangers. Many people believed that groups would be safer than being alone.
One such group survived the past two months by living in a quarry. They were lead by a former sheriff's deputy and an army ranger.
Each member of the group had a specific job to do. And because of this dynamic the group and all its members lived.