The narrator describes how signposts on the road pinpoint danger and help people avoid road accidents. He says that other walks of life are accident-prone as well, such as food preparation. A family are shown eating dinner, and that although their meat is not signposted, it is a danger. The son later falls ill from food poisoning. A microscopic view of germs multiplying is shown, and the narrator points out that germs are invisible to the naked eye. He says that just as road accidents can be cut down by following the Highway Code, the number of food poisoning cases can be cut down by following 'The Food Code'. A booklet saying 'Clean hands are essential' is seen. People are shown washing their hands, including a canteen worker who prepares lunch for many factory workers. The narrator also says that nails should be brushed and kept short.