The swamp folk of the deep Okefenokee live a brutal primitive life untouched by modern times - they support themselves by hunting alligators and selling them to the outside world. Jeff returns home from college with an engineering degree and dreams of bringing modern medical care and education to the swamps. He is immediately confronted by his old boyhood rival, "Gator-Bait" Blair, who thinks things are just fine the way the are. "Gator" whips the ignorant locals into a frenzy of fear and resistance. When Jeff is unintimidated by their threats, Blair sets out to stop his plans once and for all - with a rifle.

Young artist Monte Crandell is being sued for an unauthorized caricature. To escape arrest, he disguises himself as a mystic, only to conjure up a genuine ghost during a seance. Things come to a head during his trial, where the invisible ghost takes the witness stand on Our Hero's behalf.

Americans Tommy Baldwin and Joe Dugan are hired to transport a fabulous diamond from Shanghai to San Francisco. They will be paid handsomely on success or killed on failure. The diamond is stolen as they take possession of it.