Wind resistance on model cars, a car driven backwards and an animal air raid shelter.
Titles read: "CINETOPICALITIES IN BRIEF".
Various locations of events.
Various shots of a very small wind tunnel, showing with model cars and smoke how a streamlined model has much less wind resistance than a more rectangular model. The rectangular model has less wind resistance if it is going backwards. (Location of events unknown.)
We then see a man getting into the driver's seat of a car designed to be driven backwards. He drives it along a city street, over tramlines. (Location of events unknown - looks a bit like Piccadilly in London.)
C/U of an Air Raid Warden blowing a whistle to warn of an air raid in a village (daylight). People pick up piglets and chickens and take them to an animal air raid shelter (labelled 'Pop's Retreat') built on a smallholding. A dog makes his own way in. When the warden blows the whistle for the all-clear the animals are brought out again.