In the fourth of the highly successful Frankie and Annette beach party movies, a motorcycle gang led by Eric Von Zipper kidnaps singing star Sugar Kane managed by Bullets, who hires sky-diving surfers Steve and Bonnie from Big Drop for a publicity stunt. With the usual gang of kids and a mermaid named Lorelei.
Frankie Avalon
as Frankie
Annette Funicello
as Dee Dee
Deborah Walley
as Bonnie Graham
Harvey Lembeck
as Eric Von Zipper
John Ashley
as Steve Gordon
Jody McCrea
as Bonehead
Donna Loren
as Donna
Marta Kristen
as Lorelei
Linda Evans
as Sugar Kane
Timothy Carey
as South Dakota Slim
Don Rickles
as Big Drop
Paul Lynde
as Bullets
