The Kratt Brothers and Zoboo want to build an "Invisibility Machine" but they need some real brainpower to get the job done. Just when they're ready to give up, Brainiac the chimpanzee stops by to help. The Kratt Brothers decide to travel to India to meet other creatures with great brains but they are outsmarted by a flock of crows. Back in Animal Junction, they run right into a tremendous, invisible animal, which turns out to be Toothbrush the elephant. Elephants are really intelligent, too, and the Kratt Brothers show Zoboo that all creatures are smart in their own ways.
