In the secret underground headquarters of BABYCO, worldwide leader in infant care products, its founder and CEO, renowned child psychiatrist Dr. Elena Kinder (Kathleen Turner), is about to reap the harvest of years of research. Certain children are born geniuses, prodigies born with the wisdom of the ages, who around the age of two lose their extraordinary intelligence as they begin to communicate with adults. Though her discoveries could earn her a Nobel Prize, Dr. Kinder and her esteemed associate Heep (Christopher Lloyd) have another goal in mind: to tap into the infant and toddler brain power source and use the resulting intellectual energy to secure their own personal power and wealth. Only one thing stands between Dr. Kinder and world domination; a very intelligent two-year-old named Sly.