While trying to do a good deed for Theresa Fiorini, Mark accidentally releases her father's cows from their paddock. Mark tries to impress the pretty girl by learning Italian but his language skills prove more useful with her father.

While visiting a travelling carnival, Sonny meets Carrie Mason, a girl who wants nothing in the world but to be a clown. Skippy falls in love with a wooden kangaroo on the carnival's merry-go-round. Carrie finds she has much in common with Skippy when they both decide to run away and join the carnival.

A pair of gamblers wanting to fix Mark's football match rescuit a bumbling petty criminal to take him out of the match.

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.

A travelling Irish cobbler claiming to be a descendant of Leprechauns takes Sonny and Skippy into a cave in search of treasure. Matt uncovers the man's shady past calling into question Skippy's discovery.

Matt's discovery of an abandoned sports car leads him into a violent encounter with the driver, a delusional war veteran who then takes Sonny hostage before stealing an airplane.

A temperamental artist painting wildlife in the Nation Park demands Matt catch the vandals that have damaged his work. Skippy befriends the reclusive artist and acts as both muse and collaborator.

Sonny gets a job with a local market gardener so he can earn some pocket money to donate to charity. Skippy asks his bush friends to help search for a lost cat — a potentially expensive rescue for Matt.

A beautiful fashion model and her demanding photographer come to the National Park for a photo shoot. When the young woman is bitten by a spider, Sonny steps up to take charge of the emergency.

Sonny discovers what he believes is a timebomb but his father identifies the device as a pigeon racing clock. Upon returning the clock to its eccentric owner, Sonny and Mark are introduced to the colourful world of pigeon racing.

A pilot with a cloud-seeding airplane, an eccentric inventor, and a young Aborigine all make their own attempts to put an end to a dry spell that has hit the Waratah National Park.

Sonny receives a steady stream of animal visitors while sick and confined to his bed. A home-made cold remedy may hold the answer — if Mark can get Sonny will take it — and if it's the right medicine.

The animal and patrons of Waratah National Park run for cover when a bull gets loose and runs amok.