The group heads off in search of the twins. When Rusty suddenly stops in the middle of a town, for no apparent reason. Harry, Lucy and Shona decide to goto a shop and try and get help; while the others go and feed the birds. In the shop Shona goes to an aboriginal man who tells her to beware of the kangaroo, because it's dangerous. Meanwhile Chrissie decides to go to the shop when she is hit by a van, which has a kangaroo picture on the side. Chrissie is taken to the hospital and Simon goes with her. When they arrive the nurse asks for their passport. Simon says he needs to call a friend, who has them. So he calls Helen on the phone, Chrissie comes to and notices Simon on the mobile and then pretends to still be conscience, when she hears David and Sarah to leave, because it isn't safe, so she gets up and walks out of the hospital. Later the group get into a fight and Simon accuses Harry of being the traitor, when Simon leaves Chrissie tells the others that Simon is the traitor and sho