You could come up with any old plot you want with this one, since there really isn’t much of one to begin with. Blah blah blah Morrigan and Felicia in Scene 1, blah blah Morrigan and Hsien-ko and maybe Dimitri in scene 2, etc. That’s it – that’s the script. Done.
It’d basically be a gonzo movie, a genre that finally materialized after porn producers shaved their moustaches and realized that the plots were less important than a salad at a steak dinner. Because really, fighting games are the gonzo genre of the games industry.