Melmo's mother dies in a traffic accident, leaving young Melmo and her younger brother Totoo. Anxious Melmo's mother in heaven asks God to prepare some magical candies, and hands them to Melmo. There are two kinds: Melmo can grow 10 years older to become any sort of adult she wishes by eating a blue candy. By eating a red one, she can become 10 years younger. Using these miracle candies, Melmo disguises herself as a nurse, schoolteacher, policewoman, and overcomes troubles together with her brother, Totoo.