After an unprecedented global pandemic has turned the majority of humankind into violent ‘Infected’, a man gifted with the ability to speak the Infected’s new language leads the last survivors on a hunt for Patient Zero and a cure. The next scene shows Dr. Rose in a bathroom stall with a positive pregnancy test. Bodies of fallen soldiers are brought in to the buildings crematorium. As the soldiers are opening bags and removing dog chains, one of the “dead” opens his eyes and attacks the workers and soldiers. After a fight, he is subdued and asks to speak with the one who can communicate with the infected. Because he can speak and in unaffected by the music that has driven the other infected into a rage, they assume he is patient zero. Morgan begins to interrogate him. He reveals that he was a professor who was teaching a class when the school was attacked by infecteds. He was bitten, but while feeling the urge for violence, he still maintains most of his human abilities.