Little Miss Uncontainable is the 34th episode of Season 31 on Disney and the 48th on Nickelodeon. Isabella has a secret she wants no one to know, but she can't help herself. Soon, they secret gets around town and everyone begins to make fun of her. Doofenshmirtz has no idea about the secret and carries out his plan of wiping people's memories, whether it be a certain period of time, or their entire lifetime. New characters named Heidi, Ford, Caleb, and Haven appear.