Simply terrible. There is a plot of sorts but it is poorly explained. People walking around in dark corridors being attacked by zombie-like faceless creatures. Flashbacks that add to the confusion. Seriously, how did they get away with this one? Two years later the same people reprised; the second film isn't as bad and does sort of explain things, but this one doesn't score for anything, including special effects. Nowadays, far better films of this genre can be found on YouTube, some are made by kids with little or no adult supervision and with a fraction of the budget.