The timid, lazy, alcoholic misfit Stanley (Gene Wilder) finds himself the only human left on Earth. Everyone else, including his friend John (Zero Mostel) and his beloved Daisy (Karen Black), has turned into a rhinoceros.
Stanley decides to join everyone else and become a rhinoceros. But try as he might, he cannot turn into a rhino. At last, he climbs to the roof of his apartment building and yells defiantly at the rhinos that he is a man and will NEVER change.
Thanks John L!