The film starts with a gentle pastoral scene of some fashionable folk spending a day in the country. Luke's party of fifteen (not counting the fat boy, who's at least half a dozen), are out in a two-seater "tin Lizzie." The parties get mixed, the lunch enters the combat as an added starter, and the show is on. Here follows many ludicrous incidents, and the end of the film sees Luke at the helm of his bucking motor car with his select party of fifteen dragging along behind through the juicy mud of a swampy land to the title of "At the end of a perfect day."