A wife whose husband takes her for granted finds romance with a dashing man, but has misgivings when the husband offers to be caught in a compromising situation with his secretary to give her grounds for divorce.

When Lady Boothroyd hears that the authorities are determined to drive a road through her grounds she announces her intention to kill herself the moment the bulldozers start on their shameful work. At first disbelieving, the family at length realizes to their horror that this is no joke. All means of persuasion fail. As the hour strikes and the bulldozers roar is heard the old General enters in regimental regalia, while his old ex army servant sounds the "Last Post." Then, as the whole family stands stricken, the door opens....