The unassuming, nebbishy inventor Sidney Stratton creates a miraculous fabric that will never be dirty or worn out. Clearly he can make a fortune selling clothes made of the material, but may cause a crisis in the process. After all, once someone buys one of his suits they won't ever have to fix them or buy another one, and the clothing industry will collapse overnight. Nevertheless, Sidney is determined to put his invention on the market, forcing the clothing factory bigwigs to resort to more desperate measures...
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.
After falling in love with an American woman, Virginia Killain, who is engaged to another man, British Naval Commander Max Easton, hatches a plan that will get him enough money to support Virginia in the lifestyle she is accustomed to. Easton's plan is to disappear for a time making it seem that he has defected to the Soviets taking important Naval secrets from his job at the Admiralty and to return and sue the newspapers for slander. Not everything goes as planned for Commander Easton.
