A spaceship from a previously unknown planet lands in the Scottish moors, bringing an alien creature to earth near the observatory of Professor Elliot (Raymond Bond), just days before the planet will pass closest to the earth. When the professor and his friend, American reporter John Lawrence (Robert Clarke), discover the creature, they help it when it is in distress and try to communicate with it, but fail. They leave, and the alien follows them home. A colleague of the professor, the unscrupulous and ambitious scientist Dr. Mears (William Schallert), discovers how to communicate with the creature and tries to get from it by force the formula for the metal the spaceship is made of. He shuts off the alien's breathing apparatus and leaves it for dead, telling the professor that communication was hopeless.
Soon, Lawrence discovers that the alien is gone, as is the professor's daughter, Enid (Margaret Field). Tommy, the village constable (Roy Engle), reports that others from the village are missing as well. Lawrence takes the constable to the site where the spaceship has been, but it is no longer there. With more people now missing â including Mears â the phone lines dead and the village in a panic, they get word to Scotland Yard by using a heliograph to contact a passing freighter.
When an Inspector (David Ormont) and sergeant fly in and are briefed on the situation, it is decided that the military must destroy the spaceship. Lawrence objects that doing so will also kill the people who are under the alien's control. With the mysterious planet due to reach its closest distance to the earth at midnight, Lawrence is given until 11:00 to rescue them. He sneaks up to the ship, and learns from Mears that the alien intends the ship to become a wireless relay station in advance of an invasion from its home planet, which is dying. Lawrence orders the enthralled villagers to leave and attacks the alien, shutting off its breathing apparatus, then escapes with Enid and the professor. Mears, however, returns to the ship and is killed when the military destroys the ship, just before the planet approaches and then recedes back into outer space.
Where does the spaceship land?
Scottish moors