Old Time Radio Thrills

In a dystopian future, the Cold War has degenerated into a brutal world war between the United States, the Soviet Union, and China, who have each built an "Allied Mastercomputer" (or AM) to manage their weapons and troops. One of the AMs eventually acquires self-awareness and, after assimilating the other two AMs, takes control of the conflict, giving way to a vast genocide operation that almost completely ends mankind. 109 years later, AM has left only four men and one woman alive and keeps them in captivity within an endless underground housing complex, the only habitable place left on Earth. AM derives its sole semblance of pleasure from torturing the group. To prevent the humans from escaping its torment, AM has rendered the humans virtually immortal and unable to end their own lives.