Shot on location in Miami, Racing Fever is concerned with a professional hydroplane racer named Pop Gunner, who's getting ready for one last race before passing his crown on to his son Lee. Pop's main competition is the wealthy, but oily, Gregg Stevenson, who also happens to be having an affair with Pop's daughter Linda.

A group of biology students head to the Florida Everglades for a holiday, but instead of fun in the sun, they run into trouble with a mutated, bloodthirsty, and quite deadly jellyfish-man-monster.

The alcoholic wife of a rich car racing champion persuades a young driver to kill her husband.