Earth is no more, destroyed by nuclear war; but itinerant handyman Bert Foster, wandering the canals of Mars, is possessed by a restlessness for a home which no longer exists. Perhaps the isolated outpost on Venus retains something which could satisfy this hunger; or has the madness which shattered a world merely settled in a new location?

The population of the United Kingdom at the beginning of the 21st Century is static, thanks to computerized population control, but the wife of the Population Officer becomes pregnant for the second time.

A Middle-aged couple are disturbed during the night by a series of unwelcome visitations.