Matt Hammond's boss and a government Senator decide to sack him after it appears that Matt has run their car off the road and threatened them. It transpires that Dr. Stark has hired an actor to impersonate Matt Hammond in order to discredit him, but the whole scheme backfires and Dr. Stark has to honour the promise of a $10,000 donation to Waratah National Park.

Two Crash Detectives investigate Jerry's helicopter accident and are unable to substantiate his story of going off course to check on a bushfire. Skippy and Sonny head off to find the evidence needed to clear Jerry of the charges.

With Sonny Hammond as a hostage and a rifle pointed at Head Ranger Matt Hammond's head, bank robber Keeler forces Matt to drive him from Waratah National Park to keep his rendezvous with accomplices.

The National Park must be closed to the public after a number of animal traps are found. A recently released prisoner working with local miscreant Ben Schuyler is responsible but it is not just the animals that fall victim to the traps.

Clancy's time with the Hammond family appears to be at an end when she sits her final music exam. Her departure is ensured when she wins a prestigious scholarship to study music in London. Sir Adrian asks Matt to select a Ranger to go oversees to work in Sherwood Forrest.

Sir Adrian Gillespie arrives at Ranger Headquarters with news that Skippy is to be sent away to Sydney for a long-term scientific study to determine what makes her the world's smartest kangaroo. To avoid losing his friend, Sonny sets out to illustrate she's anything but.

As an amateur jockey, Mark is given the chance to ride Stormaway, Sir Adrian's best horse, in the Corinthian Handicap at Royal Randwick but when he goes missing before the race, Clancy secretly takes his place. Skippy places a $1 bet on a longshot, Wallaby Bill.

Sir Adrian, the Chairman of the National Park Trust, is outraged when he discovers protected wild flowers from Waratah National Park are being sold on the streets of Sydney. Working with the Hammonds, 'Uncle' Adrian is determined to catch the men responsible.