The 1968 zombie plague is ending. The living dead, eaters of human flesh who are lurking in the Evans City Cemetery, are being gunned down and burned by an armed posse led by Sheriff Ken Johnson and Deputy Jeff Sanders. Dr. Harold Ormsby is also on the scene with a team of white-coated laboratory assistants, collecting zombie specimens by shooting them with immobilizing darts, the same way wild animals are captured for zoos. Their mission is to carry out experiments on the undead in hopes of finding out what caused the plague and how it can be cured.