Many years after a nuclear war, the human survivors have created a new society where much of the work is done by androids, referred to derisively by humans as "clickers". A police official who is concerned that his sister has become involved with an android is sent to investigate a larger rumor that the androids are developing reason and emotion.

An Eskimo Army Sergeant is sent to his Arctic tribal village to gather information about a mysterious unmarked black airplane which shadows military planes in northern Alaska and equally-mysterious flashings lighting up the sky from Siberia across the Bering Strait. He soon discovers Soviet espionage at work. Along the way he must also deal with an ice-floe evacuation, an air-ice rescue, a fight with a polar bear and marriage to his fiancee.