There's an horrible apocalypse going on , and your all alone after your friends got killed or infected. Having no one by side was worst than the term "awful".. One day , you made a mistake of running off to the red zone. You were convinced you would be dead by the time , but just that moment you saw a man throw a bomb off the hordes of zombies..saving your back. Just as you were about to say thanks..you noticed, He wasn't a human. But a mutant who seemed to not lose his mind off.