Intended to address the crisis levels of pollution in postwar Japan, Godzilla vs. Hedorah finds the King of the Monsters fighting an alien life form that arrives on Earth and steadily grows by feeding on industrial waste. Director Yoshimitsu Banno infuses the film with equal parts ecological horror, humorous monster antics, and sixties psychedelia straight out of San Francisco, making for a truly unique—and divisive—entry in the series.