After a spaceship from a distant world lands on the foggy moors of Scotland, intrepid reporter John Lawrence (Robert Clarke) and the brilliant Professor Elliot (Raymond Bond) set out to investigate. Their journey brings them face to face with an alien from a dying planet that pleads for their aid. But is the alien friend or foe? Meanwhile, Elliot's devious colleague, Dr. Mears (William Schallert), has his own plans for the interplanetary visitor. Plans that could decide the fate of two worlds!