A horde of zombie gunslingers swarms an old west town and Sheriff Mack Baron is the only lawman willing to put up a fight. The townsfolk don't have faith in him and the living dead, armed with pistols, just want to kill him. Plagued by distant memories of the future, it's a bad time to be Mack Baron. Can Mack unravel the mystery of his existence and defeat the zombie hordes?