Lorrie Summers

Anthropology Professor Robert Orwell Sutwell and his secretary Marianne are studying the sex habits of teenagers. The surfing teens led by Frankie and Dee Dee don't have much sex but they sing, battle the motorcycle rats and mice led by Eric Von Zipper and dance to Dick Dale and the Del Tones.

Local beach-goers find that their beach has been taken over by a businessman training a stable of body builders.