Suggest some Gangbang or MMF scenes with plot. No legalporno no gonzo please.

Pretty much all of the old GangBang Girls movies have plots:

https://www.adultdvdempire.com/allsearch/search?q=gangbang%20girls

And do you have any particular plot in mind? Some are quite simple. Like when Rocco Siffredi in Never Say Never To Rocco Siffredi

https://www.adultdvdempire.com/658885/never-say-never-to-rocco-siffredi-porn-videos.html

Lets the entire audience gangfuck his date Perla Mazza, the only plot seems to be: the boxing match was boring.

Ella Nova In New Sensation- My Hotwife's Gangbang 4 scene 1

Proof:

https://www.adultdvdempire.com/AgeConfirmation?url2=/unlimited/549717/scene-1-streaming-scene.html

https://www.hotmovies.com/AgeConfirmation?url2=/adult-clips/549717/scene-1

Link:
https://iporntv.net/download/video/ph5dc31e002f813/shared-slut-wife-ella-nova-rough-anal-sex-+-dp-gangbang-with-multiple-men

https://www.its.porn/video/ella-nova-my-hotwife-s-gangbang-4/

https://spankbang.com/7upcx/video/shared+slut+wife+ella+nova+rough+anal+sex+dp+gangbang+with+multiple+men

https://www.pornhub.org/view_video.php?viewkey=ph5dc31e002f813