Two young boys, Tony and Bob Williams, unwittingly call out International Rescue on their walkie-talkies while playing in the Australian desert near their home at Charity Springs in the Northern Territory. To explain how their games are dangerous to International Rescue, Scott takes the boys back to Tracy Island for a guided tour, but the story makes headlines in the local newspapers which worries their father: under the guise of a weather station, he runs a satellite tracking station and is engaged in top security research for the military. Realising the true nature of the weather station, The Hood encourages Tony and Bob to play in the old Charity Springs tin mine at Dunsley Hill. Once the boys are inside, he fires a grenade into the mine entrance, causing a cave-in and trapping the boys. Tony and Bob call International Rescue on their walkie-talkies but their rescue plea is assumed to be another of the boys' games, and no action is taken...