In a dystopian world where people stay young forever, a brother and sister encounter an old man for the first time, and must decide whether or not to turn him in.

In a world where women can have their menstrual cycles removed, a family tries to talk their daughter out of joining a group that embraces their periods.

When an LA advertising executive works on a campaign to make alien sex palatable to the human race, he unwillingly endangers the survival of the species.

On an alien world, a colony of humans has evolved to reproduce with one mother and many fathers. After delaying for years, one young woman finally chooses three fathers for her baby, but her desire for freedom draws her into the orbit of the post-human anthropologists who have come from the stars to study this quaint biological mating ritual.