Des and Jason are hauling 300 tonnes of gravel soaked in bitumen along the Flinders Highway in Queensland trying to overtake a caravan that just won't budge. It's a high stakes stand-off. The wet season rains have hit. And Brownie, a certified clean freak, is covered in slop struggling to load-up hundreds of dirty cattle onto his road train. His day is about to get very messy. And Jake is racing against a big storm. Trouble is, he's hit a deep crack in a damaged section of dirt road.