A gang of criminals led by Meredith is looking for sunken treasure off Mallacoota, pretending to be diving for abalone. Sonny, son of Matt Hammond, the Chief Ranger of Waratah National
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A gang of criminals led by Meredith is looking for sunken treasure off Mallacoota, pretending to be diving for abalone. Sonny, son of Matt Hammond, the Chief Ranger of Waratah National Park, investigates with their family friend, Clancy. Sonny and Clancy are kidnapped. Skippy comes to the rescue. After a speedboat chase and a fight in the sand dunes, Meredith is captured.