Ealing Studios.

John Whittaker is a young Englishman who falls madly in love with Larita, a sexy, glamorous American woman. The two impulsively decide to get married. He takes her home to meet his family, she arrives like a blast from the future. John's mother takes an instant disliking to Lairta and undermines her every move. But Larita will blow their entrenched British stuffiness right out the window.