Australian Army Cadet Corporal, 15-year-old Roger Dunning, sets out with his friends, Peter, Stephen and Graham, on a five-day hike on the Atherton Tablelands to complete the Duke of Edinburgh Award. Their OC, Captain Conkey, has placed a set of clues to test their navigation along their 100-kilometre hike. However, almost immediately the four friends walk into trouble so unexpected and so deadly that it tests all their skills...