If you're familiar at all with Russ Meyer's work, you know to expect 1) really big breasts and 2) bizarre filmmaking with strange plots and weird imagery.
As this was Meyer's final feature film, he went out with a bang.
The movie's plot follows a man (Ken Kerr) who is interested in sex only "beneath the valley"--get it?--and not in the standard kind of way that most women, including his wife (the absolutely incredible Kitten Natividad), really want it. That's the only true plot thread--which is more than some Meyer movies have--and we follow him as both he and his wife try to "heal" him of this great psychological handicap.
I can't say enough about the firecracker Natividad, who appears entirely naked--including a scene or two where Kitten's little namesake is on obvious display--basically perpetually. As her husband won't please her the way that she wants, she has sex with basically everybody else in town--not just men. And she appears to be very enthusiastic about it. In 1979 this woman had an incredible body. Things happened in the five or so years between then and her hard-core career (health problems related to her breast augmentation, I think), but at the time of this filming she was probably one of the hottest women on the planet.
We see a lot of a few other women, too, including a melon-breasted Christian radio announcer, and, rather unfortunately, a junk yard proprietor (you'll understand when you see her). Even more unfortunately, there is A LOT of male nudity in this movie, which is going to turn off most men.
The sex and nudity in these movies nearly always is played for laughs, and of course it is soft-core porn, but even today this is racy stuff--the hardest that Meyer's work ever got.
The single greatest thing about this picture, though, is the phenomenal narration by Stuart Lancaster, written with Meyer's signature verbosity (aided in great part, I think, by Roger Ebert's screenwriting). That makes this must-viewing for any adult who is interested in film history.