Old Dan tells the boys that in the days of the Gold Rush, his father was convinced he had a hidden lode in Secret Valley. Beaver (Lofty) remains very impressed and plans to find the vein.

Children of Secret Valley organize an auction as an attraction for the weekend. Mistakenly they sell a small chest whose contents are the property survey deeds of Secret Valley

Children of the Secret Valley mount a rescue operation of a certain tree, whose leaves are eaten by koalas.

Jan Van Gelder, owner of the Bildara junkyard, was an ace pilot during the war and has kept his small plane as a souvenir in a hangar by the runway. He is requesting a permission to the council to give airplane rides to children, but Cribbins enjoys refusing it with the excuse that he's too old to fly.

The children from Secret Valley help the police to apprehend a bank-robbing couple.

Beaver, the smallest boy, decides to run away and leaves a note saying that he goes into the bush, and his buddies fret over his whereabouts.

The Secret Valley boys are astonished when "Spider" asserts to have changed his ways and decided stop being wicked, asking to join them. However, the boys repel him straightaway.

The Secret Valley boys find a small chest containing, among other things, a candy recipe that turns out to be scrumptious. The boys decide to make large quantities and sell them to raise funds.

Rosa Ortega's family has settled in Bildarra, Carlos, the father, trains horses on his farm for exhibitions in other cities. There is only one small problem, Rosa's mother is homesick for her native Spain. To make her happy and feel at home, the guys from Secret Valley hold a party for her.

The cousin of "Spider", Pee Wee, comes over and tells him that he can beat the guys at Secret Valley. When Pee Wee succeeds, "Spider" is humiliated and he comes with a proposal to the kids at Secret Valley

The local newspaper, after renewing their equipment, gives away the old machinery to Secret Valley. The kids decide to make their own weekly newspaper to express their views on the events of Bildarra.

In the course of a battle between the boys of Secret Valley and the gang of "Spider", old Dan joyfully announces that Rosa has won a major writing prize. Rosa will have to go to Sydney to collect her award from the Spanish consul.

Beaver is upset because of being the youngest of the boys he is often left off the activities of Secret Valley. The others don't want to mistreat him and can't realize that he begins to feel the effects of this displacement.

William Whooper intends to destroy natural life of Secret Valley. When the rogue is hatching a plan to carry out his plan appears godsend Paula, a most unusual young naturalist and vegetarian who is camping in the valley.

Spider McGlurk sprinkles flour over Secret Valley Camp and, for once, manages to escape in his minibike. Secret Valley kids are frustrated because it is the third time he has done it, and they can't chase him because his minibike is way too fast. Lofty has an idea to raise money, organize aSecret Valley mini bike race where "Spider" Mc Glurk will also compete.

Secret Valley kids have a new project, an invention of Miles and Toshio's, who are still trying to win the competition for energy alternatives to oil.

A new group of kids has come to spend the weekend at Secret Valley. Among them is Jeff, a guy who seems to be incompetent at everything he does.

Miles and Toshio are working on a new electronic project that aims to be a metal detector for their school project. But the gadget doesn't work properly because instead of detecting things it magnetizes them.

Secret Valley boys have proposed to the town boys a night camping on the beach. Spider and his gang decide to spoil the party.

The beach and bay are an important part of Secret Valley activities. The kids are teaching guests about how anglers lay down fishing nets.

Cribbins punishes "Spider" and his gang for failing to drive the kids away from secret Valley.

Mr. Van Gelder is angry because there are children who break into his junkyard at night and spoil things.

The people of Bildarra is honored and intrigued by their newly arrived neighbors from Spain.

Spider contacts a local pilot, a young amateur who likes to be called "The Red Baron". Spider's scheme is simple: he aims to make Secret Valley uninhabitable by dropping the biggest stench bomb ever made.

All the local dignitaries attend the official opening ceremony of Secret Valley. The city's first group of kids, who have come to spend the weekend, also arrive, including "Spider" McGlurk dressed up as a girl.

Australian drama series about a group of children attempting to establish a holiday camp: Big Plans. With Max Cullen, Sheila Kennelly. Neighbourhood kids help old man McCormack (Hugh Keans-Byrne) thwart villains who are fraudulently assessing his lifelong home in Secret Valley.