Sid learns that washing his hands with soap and water will help him be healthy and keep germs away.
Sid's parents tell him to wash his hands to keep away germs. But Sid can't see any germs on his hands, so why should he wash them? Sid and his friends learn that germs are so small that you can't see them. And they discover that a great way to stay healthy and keep germs away is by washing their hands with soap and water!