Perry defends his client by invoking the constitutional provision of double jeopardy.
Sentinel of the sea Flipper discovers a sinking raft, manned by Bonnie McCoy, her father, an elephant and a chimpanzee.
A girl is placed in a straight jacket, securely locked in a trunk, and cast to the bottom of the ocean. It's all part of a carnival act, except she doesn't come up! Mike Nelson learns the secret of the act in time to save the girl from drowning.
In an effort to raise money to pay off creditors of McCoy's Floating Zoo, Sandy and Bud join Bonnie McCoy in a scheme to run away with her father's elephant and chimpanzee to rent the animals to Anderson's Land and Sea Circus.
Judy the chimp steals a briefcase full of money and Sean McCoy of McCoy's Floating Zoo is arrested - so Sandy, Bud, and Bonnie decide to put on a show with Flipper to raise money for her father's bail.
