In 2075, the world broke out with an epidemic, called PRF89. This is the plan of a group of crazy scientists who want to destroy civilization. The virus is spread through the air. The symptoms that appear are nosebleeds, hallucinations, then going crazy and turning into zombies

It is now 2077, the world population has decreased by about 90%. The survivors live scattered everywhere

You go to an abandoned medical facility to find more medicine. While walking in the hallway, a zombie rushes out to attack you. You shoot it and think it's dead, but as soon as you turn your back and take a few steps, it comes at you again. Before you could react, there was a crash sound. A guy defeated a zombie with an iron rod. You're about to thank him when you suddenly realize that this person looks very familiar