Skippy the kangaroo and her pals, head ranger Matt Hammond (Ed Devereaux), flight ranger Jerry King (Tony Bonner), Matt's two sons Mark (Ken James) and Sonny (Garry Pankhurst) feature in each episode. There are regular appearances from Clancy, the teenage girl who can't keep out of trouble and Dr. Anna Steiner, the beautiful German scientist who lives and studies wildlife in Waratah National Park. Sonny Hammond is a Park Ranger. After an accident involving a dangerous helicopter rescue, he is sent to work in the city. He and his twin children Jerry and Louise (Lou) are unhappy at being cut off from the bush and most of all from their wonderful kangaroo Skippy. Skippy disappears from her usual bush haunts, pining for her lost family. Two of the Hammonds friends mount a search for her - Kate the vet and Thel McGee, proprietor of Habitat, a small animal-based tourist attraction near the National Park. Kate and Thel however, decide that only the Hammond twins can help in the search. Skippy is found by Jerry and Lou, Sonny becomes a partner in Habitat, and the Hammonds are off to a new life.