The late sixties were a tough-and-tender time when many an over-sexed young girl literally put her ass on the line in order to maintain her vaginal virginity. The idea of backing into the sex act while keeping up a good front, is the stuff that bestsellers are made of. So, Chris, a sensuous,successful author, with encouragement from her lover, Harry, who decides to document a book to be called "The Bottom Line," the real-rear-way that things went down, by bringing some of the "old gang" together for a hot weekend of raw reflections. Getting together are Vin, a businessman who has lost his sexually adventurous nature; his wife Britt, who longs for excitement; and B.R., a lady with a preference for the softer things in life, but who can handle the harder facts of lust. Rounding out the group are Britt's brother Chico and B.R.'s playmate, Lee.