I couldn't resist.
First of all was my old friend Nancy Drew who, in this incarnation has teamed up with the Hardy Boys and they, along with her ever-faithful boy friend, Ned Nickerson (those two have been dating since the 1930's and I don't think Ned has gotten to second base yet,) and her girl pals Bess and George are having a beach party on Padre Island.
I grew up on a combination of the early Nancy Drew's along with the Fifties version and I was a little surprised by the romance novels elements that have crept into the 1989 version. Nancy, that minx, has unresolved feelings toward one of the Hardy boys and is a bit of a flirt with another guy. The cover should have been a giveaway.