When Stanley Windrush leaves the Army, he sees his future as an executive in industry. Unfortunately, Big Business takes the view that it can carry on quite successfully without the contribution of an amiable idiot like Stanley. And so in desperation he seeks the advice of his Uncle Bertram, the head of an arms factory, who is currently planning a shady, get-rich-quick deal. Stanley goes to work for his uncle and unwittingly upsets the elaborate and crooked business scheme.