When a gruesome plague infects a maximum-security penitentiary, the visitors, guards and inmates are transformed into flesh-eating zombies -- and it's up to an elite group of armed guards to band together with the survivors to exterminate the undead. Bay Bruner, Griff Furst, Chriss Anglin, Scott Carson and Bobby James lead the cast in this blood-spattered tale of horror from director Peter Mervis.