The boys are so frantic when Flipper goes missing they think Porter gave him away because they were naughty. Another Park Ranger alerts Porter to Dory Stone's advertisement to sell a dolphin but getting Flipper back is tricky. He was found in the open ocean and when the Constable comes, all the paperwork he asks for is in order and it looks as if the buyer can take Flipper and Dory will make $500. Sandy follows Dory's dog into his trailer where he finds the horn and in the argument that follows, Flipper escapes forcing Dory to refund the money when the circus owner wants no part of it. After appearing in court over the stolen horn, Dory signs a statement that Flipper belongs to Sandy and Bud.
The youthful innocence of the boys is more evident in this very early episode and is manifest in various ways: how strict Porter is with the boys getting very agitated because of undone chores and a messy house; how Sandy plays more like a child than a teenager (featuring a scene of him riding Flipper like he did in the first movie filmed 2 years earlier); in Sandy getting very emotional when it looks like Flipper has been sold and the child-like glee Bud exhibits as he rides in the camper van alongside the now free Flipper. Some trivia: this is the only episode in the entire series where Sandy is seen wearing a pair of blue jeans not cut down to shorts.