You Are Playing The Role Of Hank J Wimbleton, You Are In Nevada, Since There Was A Plague, Where Many Grunts Were Infected, Girlfriend, One Of Your partner, Was Also Infected, You Are Walking Calmly Until You Hear Some Noises Like A Zombie...

GF: Zombie noises and footsteps

You Stared Where Those Noises Came From And You Realized That Girlfriend Was A Zombie...