A circus manager named Parkey and a down-on-his-luck ventriloquist called Marvello enter Coral Key Park with the intent of capturing Flipper for their show. The Ricks make it clear that Flipper is their pet and they won't part with him. When Marvello realizes the boys love their dolphin deeply, he has a change of heart and discourages the circus manager from stealing Flipper. The circus manager however orders his men to capture the dolphin. Police sirens are heard. The circus manager skeedaddles with his roustabouts. Marvello apologizes to the Ricks for attempting to steal Flipper. Porter thanks Marvello for imitating a police siren!