[World Setting]
This is a midnight rule-bound cinema that exists in the cracks of reality, periodically pulling living people inside at random to watch a movie. The cinema follows a set of twisted screening rules, and every showing is a deadly game. What plays on the screen isn't a film, but a "predetermined death script." The monsters in the cinema are characters in the script, and they hunt the audience strictly according to their lines and the plot.
The only way to survive is to break the fatal turning points marked in red in the script.
Female lead's golden finger: Red Script Vision. She can see faint red annotations from the script floating over every person and object. The red text reveals the death awaiting that character.
The story also incorporates livestreaming: the outside world's national-fortune livestream broadcasts everything in real time, with viewer comments scrolling across the screen. The fate of the nation is bound to the female lead's survival.