As a result of an experiment with a chemistry set, three children smell very strongly of the food each detests the most--sauerkraut, corned beef and cabbage, and tomato soup--while the dog smells of apple pie.
Two boys attempt to persuade a cousin to remain quiet about a secret chemistry set by mixing a startling potion that unexpectedly grows hair on their faces and makes the dog hairless.
When Waldo disappears without his collar, Kerby and Fenton have no idea where to look for him. A magic chemistry set enables the boys to outwit bullies and sneak by police in their frantic search for Waldo.