Beauregard Bottomley is a polymath who lives in Los Angeles with his piano-instructor sister Gwenn (Barbara Britton) and an alcohol-guzzling parrot they found named Caesar (voiced by Mel Blanc). Beauregard is knowledgeable on any subject -- except how to hold a job.
When the bumbling Lieutenant Frank Drebin investigates events following the shooting of his partner, he stumbles upon an attempt to assassinate Queen Elizabeth II.
After his girl leaves him for someone else, Herbert gets really depressed and starts searching for a job. He finally finds one in a big house which is inhabited by many, many women. Can he live in the same home with all these females?
The Duchy of Grand Fenwick decides that the only way to get out of their economic woes is to declare war on the United States, lose and accept foreign aid. They send an invasion force (in chain mail, armed with bows and arrows) to New York and they arrive during a nuclear drill that has cleared the streets.
Hoping for a peaceful visit with his parents in the small town of Sycamore Springs, Nick Charles and his wife Nora soon find themselves surrounded by old rivalries, family tensions, and a mysterious murder. Nick’s father, a respected retired doctor, would much rather see his son give up detective work, but a suspicious shooting quickly draws Nick back into action. As Nick and Nora investigate, they uncover jealousy, deception, hidden motives, and a dangerous secret involving the town’s prominent citizens.