A group of Mercenary led by Maj. Max Gatling are fleeing from a failed rescue attempt, having been hired by a rich industrialist to enter a zombie-infested city to rescue his daughter Jude. At the extraction point, Gatling tells the other survivor he is staying to find Jude and complete the mission. He eventually locates Jude and tells her he is going to get her out of the city, and she takes him to other survivors. There, he is introduced to the survivors including group leader Duke, Reese, Elvis, Lynn, and Anna. Jude is revealed to be in a relationship with Reese and pregnant with his child. The next day when Gatling, Jude, and the others go out to retrieve gasoline from a gas station, Gatling attempts to get Jude out of the city by force when she refuses to go without the others. However, he is stopped by the others and left for dead. After discovering Jude is pregnant, Reese rushes to Gatling's aid so that Jude can be taken out of the city. At this point it is revealed that not only is Jude's father some rich industrialist, but he is also the one who caused the zombie pandemic. While returning to the stronghold to get Jude, Gatling and Reese discover a band of prototype non-programmed robots. Gatling reprograms the robots and proceeds to the stronghold. When it is revealed that the city is to be Firebombing, Gatling and all of the survivors make preparations to escape.