A year later, after the catastrophe that took place around the world. A terrible virus has claimed millions of lives. People began to climb up after the Ebola virus ceased to be transmitted by airborne droplets, and was less dangerous than a year ago. But things didn't turn out so well. The virus has acquired new symptoms: higher survivability of the infected, attacks of aggression and animal hunger...
Missions tell about a guy who was not infected with a virus, who decided to find the surviving people, unite with them, and continue the human race.
P.S This is not a simple zombie shooter, there is something to think about.