Atomic scientist Dr Martin (Peter Graves) disappears during a nuclear test when his plane crashes. He turns up a while later, with a gap in his memory. He finally recalls that he was contacted by aliens who plan to invade and conquer the Earth with giant spiders and lizards and other creepy crawlies the camera has zoomed in on.
The US military is naturally skeptical about Dr Martin's story, especially when he tells them the US should nuke the aliens in their underground base before it's too late. Then Dr Martin has the idea to cut power to the alien base which will make them explode (for some reason). What then follows is one of the most boring chase scenes through a power station you can imagine...
This really isn't a good film. The budget is low and the film is padded out ridiculously. Ironically the use of stock military footage of 1950s US jets and helicopters at the start of the film, originally just to pad the film out, is probably one of the best bits! Amusingly some of the actors sound half-cut while reciting their lines.
