As the world is overrun by zombies, a group of scientists and military personnel sheltering in an underground bunker in Florida must decide on how they should deal with the undead horde.As the world is overrun by zombies, a group of scientists and military personnel sheltering in an underground bunker in Florida must decide on how they should deal with the undead horde.As the world is overrun by zombies, a group of scientists and military personnel sheltering in an underground bunker in Florida must decide on how they should deal with the undead horde.