It'd have a barely relevant title that sounds cool to the tools who'd watch the movie. Like "The Darkness" or "Kreep"

There's this hot slutty chick, okay?

And some demons are out to get her. They probably want to eat her or whatever demons do to hot slutty chicks.

So she tells her friends how she almost got eaten by some demons. So they go and try to protect her.

But they don't really help her at all. They just die and get the chick into even sticker situations.

Anyway, there's like forty minutes of filler; Unimportant characters getting killed, staredowns, unimportant people sobbing over the unimportant characters getting killed, maybe an implied sex scene. Whatever can make the movie last longer than an hour.

Slip in a few scenes of her almost getting got by the demons and successfully fending them off by doing something that involves exposing her breasts and you have a full length movie.

Then in the end all her friends are dead and the demons stop chasing the girl for no reason. Then the theater version has some shitty ending, like she goes and lives a rich fulfilling life or some shit. But then when the DVD gets released, there are like a bunch of alternate endings. All of which are just scenes the main character getting killed by the demons in predictable but strangely arousing ways.