After a mysterious explosion leaves a large fissure in the ground, two young boys are confronted by an unknown phenomenon that inflicts severe radiation burns on one of them. There follows a spate of attacks at radiation establishments as the inexplicable life-form plunders radium stores. Dr Royston, an expert in atomic research, is brought in to explain and curtail the activities of this alien creature before it causes disaster.

Angela Barrows is a man-eating business woman sent by her American employer to investigate their export opportunities in Edinburgh. En route she meets Robert MacPherson a businessman who asks for her help to bring his company into the 20th Century. The staff, led by Mr Martin has other ideas though, and a battle between the old and new business methods soon breaks out.