This mad scientist is trying to make a swamp monster, and it would go a hell of a lot faster if his assistant would keep all the vengeance-crazed relatives of his victims from jumping him while he's feeding his almost-but-not-quites to the crocodiles in the swimming pool.

Meanwhile, at the local motel, underhanded dealin's are transpirin'. Seems this oil guy is in town looking for the black gold, and some crooks want the 411. One of the crooks ends up stabbing the joker, so they haul his body out to the swamp in the trunk of their car (vanity plate: "JAZZIN"), chum it with a stump cutter, and when his partner shows up the crooks set the clueless bastard up with a whole team of ringers. A long eventually later they all end up at the mad scientist's crib, where they hang around for a while smoking, taking in the local color (supplied by the local coloreds), and engaging in the attempted rape. After most of the crooks are taken out of commission via unrelated misadventures the scientist finally succeeds in changing someone into an absurd-looking swamp monster, which immediately kills him and then commits suicide. The end.

Okay, then.