Porno (2019) on Netflix

Plot summary

Five teenagers work at a small-town movie theater in the early 1990s. Their boss, Mr. Pike, leads a prayer circle and allows a movie night once the theater is closed and clean. The teens argue over which film to watch until a noise interrupts them: an old man is running around near the screen. He vanishes through a boarded-up doorway in the lobby, and the group follows him down into a basement full of old film reels. They carry one upstairs and vote to play it, and the pornographic film releases a succubus named Lilith.