Some of the worst dictators & villains from history have returned as power hungry zombies, and they are attacking the United States.  They have destroyed a large portion of the country and have captured many important U.S. artifacts.  You have been selected as part of an elite team that is sent into battle the zombies and recover these artifacts before it is too late.  You will have several missions to complete.  At the end of each mission you will recover an important artifact to return to our home base.