Jase and Simon are heading north following the Old Ghan line to Alice Springs. Along the way they come across an old water tank which was an essential part of the train history. After a resupply in Alice, the boys move on to Katherine to trade out a new piece of gear that they've been working on back at the shop. They're going to need it to complete their mission for this leg of the trip, which is to replace a stolen plaque at the site of the terminal border post location on the Gulf of Carpentaria. Getting there is going to be the the hard part with water and sandy patches to cross. Moggy proves that size matters when it comes to avoiding getting bogged in the sandy areas, but the lighter D-Max has the upper hand when it comes to the salt pans and mud flats. There's also delicious Lemon Lime Pie for dessert, bush bubblegum, slithery creatures and more!