Classic British comedy adapted from a James Thurber story about a tweed manufacturer's elderly accountant who devises a plan to save the company from an American takeover bid. The arrival of an efficiency expert from the States causes enough of a stir but when it turns out to be a woman the old-fashioned number cruncher declares war. Man-eating businesswoman Angela Barrows is sent by her US company to Edinburgh to investigate export opportunities. She meets businessman Robert MacPherson en route and he persuades her to help bring his company into the 20th century. The staff lead by Mr. Martin have other ideas and a battle between the old and new business methods breaks out.