A plague has swept the world; Weimar and Jena, the only surviving cities, have very different approaches to the epidemic: Weimar shoots infected zombies on sight while Jena is searching for a cure for the plague victims. At the border of Weimar, Vivi meets Eva and the two attempt to make it on their own in the Black Forest -- but surviving a plague is traumatic, meaning the zombies aren't the only monsters the girls have to face.