Two scientists, Dr. Elena Kinder (Kathleen Turner) and Dr. Heep (Christopher Lloyd), use genius-baby studies to fund BabyCo's theme park "Joyworld". According to Dr. Kinder's research on toddlers/babies, babies are born possessing vast, universal knowledge and speak a secret yet impossible-to-translate baby pre-language called Babytalk. However, at age 2–3, the knowledge and language are lost as the babies "cross over" by learning how to speak human languages. All babies raised in Dr. Kinder's underground research facility were adopted from the orphanages Babyco supports (As they serve to filter out which babies should be raised under the Kinder Method and which babies shouldn't be raised under the Kinder Method) and transformed into small geniuses through use of the Kinder Method, and then used in experiments to decipher this secret yet impossible-to-translate language used by the eight baby geniuses.