Colonel Proudfoot of Proudfoot Industries tries to entice a couple of newly qualified dentists to advertise "Dreem", a revolutionary type of toothpaste, but he knows that if the dentists learn that they are part of an advertising campaign, they will be struck off, and the campaign will be a disaster.
Eric Barker
Colonel J.J. Proudfoot

Reginald Beckwith
Mr. Duff

Richard Wattis
Macreedy

Charles Hawtrey
Mr. Roper