To illustrate, consider a well known motion picture. I’ll use The Wizard Of Oz as an example. In it, Dorothy is a bored, young girl who dreams of something more

The premise of the movie, however, is that a young girl learns a valuable lesson about life and family while unconscious from a blow to the head.
Premise cuts to the chase. It also leaves the door open to many different interpretations. Using the basic premise, Dorothy might have been struck in the head with a shovel or fallen out of a hayloft and had any number of disturbing dreams course through her unconscious mind which ultimately would lead to the same basic conclusion.
Therein lies the beauty of premise. It’s a loose thread that you can tie up any way you like. Simple porn plots aren’t really plots per se. They are ideas that tie several vignettes together cleanly. The easiest of such premises is that certain events occur or have occurred between various and sundry characters, and they are bound together through a narrative.
I recently watched a DVD called “The Arousers” (a late-70’s porn flick that has been re-released on DVD) in which the premise was very simple. A young man is doing a study on homosexual experiences and has placed an ad somewhere (‘where’ is not important) asking men to send written accounts of their fantasies or experiences to him. When the film opens, he and his buddy/partner are enjoying a glass of wine and reading the responses to the ad. As the narrative begins, the scene dissolves into the first vignette. Once the sex scene is over, it dissolves back to the two ‘main characters’ who then pick up another letter and begin reading it. The scene dissolves into the next vignette, and so on until – predictably – there are no more letters, and the two buddies finish the film with their own sex scene. Pretty simple overall, and very effective. The premise tied all of the sex scenes together rather neatly, incorporated several unrelated fantasies into one story (whereby the premise actually became the fantasy), and drew the viewer (in this case, me) into the action. I wanted to see what each upcoming fantasy would reveal.
For what it’s worth the sex in that video was pretty mediocre, but that’s not the point of this discussion.
Plot is more difficult to sustain because all of the characters and actions MUST work together for the story to have cohesiveness. It is, in essence, a form of choreography. Every step along the way has to be pre-determined. And there has to be a definite beg

If you can weave a good story and have an aptitude for writing, I’d encourage you to go all out and try your hand at plot-driven porn. It’s OK if you borrow ideas and plots from other movies you’ve seen or books you’ve read – people love a good spoof. Just be sure you change the title and enough of the story and the characters’ names to protect you from copyright infringement. But if that's beyond your capabilities and all you can envision are various and sundry vignettes featuring men fucking and sucking in different positions, try creating a simple thread to tie your vignettes creatively together. That will at least give you an edge over the many producers who do the stock and trade point-and-shoot videos discussed earlier and it will help bring back that missing element of fantasy that the bareback genre so desperately needs.
Thoughts???