A woman prepares dinner in the kitchen, peels and boils fish, kneads dough, makes chops. A man at work in a design office, comes home for lunch. The husband and wife are having dinner. Animated diagrams and pictures about the need for vitamins in the daily diet of a person, accompanied by a narrator's text. Guinea pigs in the laboratory. Patients with scurvy in a hospital ward. Foods containing vitamin C on the table and on the shelf. Ascorbic acid in a test tube. Chronicle footage dedicated to the North Pole-I expedition. Fruit picking in the garden.