Dr. Two-Brains is up to his old tricks – this time using his Mind-Exchange Ray to take over the Mayor’s body and turn the whole city into cheese. When WordGirl tries to destroy the ray, it ends up blasting her and Dr. Two-Brains instead! The superhero and the super villain have switched bodies! Can WordGirl convince the Warden of her true identity and get out of jail before Dr. Two-Brains uses her powers for his evil plans?Vocab words: Permanent, Exchange