Tracey Adams deserves some sort of recognition for keeping a straight face as she's forced to recite some of the silliest story exposition ever in this dumb porn parody.
She's telling private dick Mike Hummer (Jay Serling, hairy chest and all), the story of her husband's family: the Cumsteins. Briefly, hubby Herschel Savage's family is cursed by their late uncle who couldn't consummate a marriage with a lover named Fellatia, and Savage and his brothers (they're deceased too, now) are unable to cum. To continue their family tree with an heir, Savage would have to have sex with the reincarnation of Fellatia.
Hummer assigns his private eye partner Danielle to pretend to be the reincarnation of Fellatia and go after Savage, while Hummer humps new client Tracey. A couple of porn actresses Tara Blake and Tiffany Blake are thrown into the mix, even having lesbian sex together though one can assume they are not sisters in real-life, just phony names.
The sex scenes are sloppily intercut, and usually capable Roy Karch treats the movie with no respect, signing the credits with pseudonym "John Shubert". The movie is a total mess, merely watchable by Tracey Adams fans. Tracey soon after starred as a private eye in "Sextectives", not much better than this clunker.