The final four pairs of contestants face their fears on the high wire relay, then the next day, they meet host Shura Taft near Mount Victoria, in another part of the Blue Mountains, for their next challenge, where they are divided into two teams of six that start at opposite ends of a track and are given 90 minutes to carry heavy bags of money to meet each other somewhere in the middle of the track in order to win the money that is in their bags for the pot, a challenge that will see personalities grate and egos clash. The following evening, they travel to Middle Head in the Sydney Harbour National Park for a challenge that will see them sleeping under the stars and also conducting a hunt around a maze of military forts for twelve hidden keys that open chests providing some essential and some luxury items for the group to use during their overnight camp, with each chest also costing the group some money from the pot.