Famous organist Anton Phibes is horribly disfigured in an automobile accident while rushing to the side of his sick wife and presumed to be dead. Once Phibes learns that his wife died on the operating table, he is convinced the doctors are responsible and begins exacting his revenge on all those involved.

In the not too distant future, a very smoggy and overpopulated Earth government makes it illegal to have children for a generation. One couple, unsatisfied with their substitute robot baby, breaks the rules and gets in a lot of trouble. (Z.P.G. stands for Zero Population Growth.)