At an army base in Utah, Major Rick Graves worries about an upcoming nuclear test. Graves's friend, Charles Spence, believes that a three-month-old crater, supposedly caused by a meteor, was in reality created by an alien spaceship. He also believes that Carl Wyeth, an engineer on the base, has met with the aliens. Spence has Graves call in David Vincent to investigate. Meanwhile, Graves voices his fears to his superior, General Beaumont. But Beaumont is colluding with the aliens, who have plans to explode an anti-matter bomb that will kill millions of people.
Did You Know?
William Windom starred in the similarly titled Star Trek TOS show "The DOOMSDAY Machine," otherwise completely unrelated. See more
Near the beginning of the show, as David Vincent and Major Graves stand talking on the edge of Graylock Crater, the shadow of a boom microphone can be seen in several shots behind them on the left side of the screen. See more
The earth turns on its axis, unaware of the disaster that never happened. And David Vincent goes forward again, very much aware that a far greater disaster can lie ahead - the final disaster, wrought by the Invader.