When Dingle takes to the air in his hang glider, helped by Matt, he crashes, but manages to bring the Poopmobile down using Mats darts to burst the hot air balloon. The children narrowly escape injury, but their precious Bus has been badly damaged. They have lost all the water from the steam turbine and it has evaporated away into the heat and sand. Jamie believes he must prove to himself that he has the ability to use his bushman's knowledge to find water in the desert, and he takes Shorty and Sparks with him on a journey into the wild desert.