Now since when did a porn flick need a plot?
Not sure if it's still around, since watching porn is against my religion (just kidding), but for a while there was a movement to produce what I call "boutique porn" - high-end, expensive, full-production pieces with real acting and real plot.
I knew a producer in LA that was getting into it and had a few initial successes, but I'm not sure if they continued. The idea was that women, having become such major pornsumers, wanted them some romance in their porn, just as they liked some porn in their romance (novels).
I know the production costs for his one boutique film were almost double what a regular porn vid would be. Plus, he of course had to deal with more logistical problems - like where do you find a guy who's hung AND can enunciate?
Maybe it's something you can look into as part of your new career as a
pimp porn baron smut peddler erotica writer.
Oh, Lao-Tzu save me - I amuse myself!