Story on LetMeJizz
Dialogue and a setup come first, a scenario that builds tension before any clothes come off and pays it out once the fucking starts. The plot gives the sex a reason, so the scene moves from setup to seduction to a full session with the narrative threaded through. Production tends to run longer and more polished than a quick gonzo clip, since the payoff depends on the buildup landing.
223 story videos here, all HD and all free. New ones go up daily, so check back if you don't find your scene first time around.