Koala Balloon.The Kratt Brothers devise a new creature challenge, to try to survive 24 hours in the wild Australian Outback, without any kind of technology whatsoever—including their creature power suits. Both are wanting to learn more about Australia's rare desert creatures, the old-fashioned way. Ignoring Aviva's concerns about their safety, they pack their bags with survival gear, and skydive into the desert, hoping to find excitement and adventure. Meanwhile, Zach Varmitech and his Zachbots also fly to Australia to find eucalyptus leaves for Zach's eucalyptus tea, hoping to use it as a cure to his common cold. But after finding a stow-away koala in the eucalyptus leaves, Zach ejects him from his jet, attached to dozens of balloons. The Kratt Brothers watch as he falls from the sky, rescue him, and name him "Koala Balloon". They volunteer to watch him and keep him safe until they arrive at the designated eucalyptus forest where the other Wild Kratts are waiting for them. Meanwhile, Aviva worries that the brothers might not survive the night, but Koki and Jimmy reassure her that Chris and Martin know what they are doing. But the koala makes Martin and Chris's survival in the desert even more difficult when he accidentally destroys their precious food and water, endangering all their lives. The two then spend their night protecting the koala from a pack of hungry dingoes, instead of getting their much-needed sleep. Eventually, Martin reveals that he packed the creature power suits anyway, just in case they needed them and use thorny devil powers with a thorny devil friend. The brothers are then forced to lose their bet with Aviva, activating their creature power suits so they could survive long enough to make it the eucalyptus forest. After finally meeting with the rest of the team, they set the koala free, and admit defeat, learning that even some of the greatest explorers and zoologists in their history sometimes needed help from modern-day technology.