No, No, No, Nooo,
THIS CAN'T BE REAL !
That is the only word that Alfred Cliff could utter when he finally reached the house of his girlfriend after almost a whole day of fighting against zombies and running away from them that mysteriously appeared when some people started to feel an intense pain in their heads making them fall unconscious.
Then, after 10 seconds, they started to move, but not the movements of humans anymore, but rather fast running and zombies that started infecting their friends, their co-workers, their families, and other people as soon as they woke up.