This series follows the adventures of twelve-year-old Tracey, her nine-year-old brother Ben and their mother, Maggie, who patrols the Katta-Moornda National Park as a Ranger. Here they have to deal with a myriad of problems, from protecting the native animals to dealing with public encroachment on prohibited land. When Tracey, Ben and their young friends set out to help, they discover not only adventure but also learn about the environments of this country and the role of its protectors both old and new.