Vic Challenger visits Australia with friend Lin Li. She is there to meet a Great Aunt and her family, Then a band of wannabe bushrangers steals a map to a mysterious family treasure. Vic and Lin go after them. Along the way, they must deal with the bushrangers, multiple deadly cryptids, harsh nature, and unfriendly wildlife! Early in their visit, an aborigine warns them, be fast or be dead. The truth of that statement keeps turning up!