It becomes evident that the group is invisible and their parents cannot see them. A news report includes an eyewitness account of 'four walking into the waves'. Four? - there are six of them.
Chrissy follows Simon who has run away, claiming that he is following Gerry and Melissa. Meanwhile, the others find mysterious markings and a burned out crop circle in the ground.
Harry recovers and tells Lucy that he suffers from epilepsy and left his medicine back in Scotland, so he can be stronger like the other guys. Dingos invade the camp and Shona and Leon take refuge in a tree.
Simon and Chrissie decide to stay one more night at the camp sight before they leave. Meanwhile the others get lost and David and Leon continue to fight and argue. Shona shows Sarah the capsule.
Members of Falkirk's UFO club, head to Australia to an abduction hot-spot. Armed with video cameras and hoping to spot something extraterrestrial, they are met by Melissa, an Aussie ranger, who will accompany them to the outback.
Sarah tells the group about her UFO encounter. The others don't believe her. Leon is bitten by a red-belly black snake. Shona goes to get the anti-venom from the medical kit, only to discover it is missing.