The "Beach Party" gang is back again for laughs, rock and roll, surfing, and those sexy bikini bathing suits. The plot, such as it is, involves a missing singing star, a mermaid, and Eric Von Zipper's gang. With Frankie, Annette, Harvey Lembeck, Linda Evans, Paul Lynde, Don Rickles. 98 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital mono.