When Waring Hudsucker, head of hugely successful Hudsucker Industries, commits suicide, his board of directors, led by Sidney Mussberger, comes up with a brilliant plan to make a lot of money: appoint a moron to run the company. When the stock falls low enough, Sidney and friends can buy it up for pennies on the dollar, take over the company, and restore its fortunes. They choose idealistic Norville Barnes, who just started in the mail room. Norville is whacky enough to drive any company to ruin, but soon, tough reporter Amy Archer smells a rat and begins an undercover investigation of Hudsucker Industries.

While looking for an apartment, Jeanne, a beautiful young Parisienne, encounters Paul, a mysterious American expatriate mourning his wife’s recent suicide. Instantly drawn to each other, they have a stormy, passionate affair, in which they do not reveal their names to each other. Their relationship deeply affects their lives, as Paul struggles with his wife’s death and Jeanne prepares to marry her fiance, Tom, a film director making a cinema-verite documentary about her.

The British discover that someone has perfected a way of tracking submerged submarines and is offering the technology to the highest bidder. An international crisis breaks when a Royal Navy Polaris submarine equipped with sixteen nuclear warheads disappears while on patrol. The British send agent James Bond to secure the tracking device and locate the missing vessel before its missiles are launched at the West.