After a young girl is found dead in a secluded religious mountain community, a pack of teenage girls decide to fight against the evil spirits they believe killed her by embracing their own dark nature.
Spoilers ahead
The "monster" is revealed to be a man in a suit who attempts to tear off the clothes of the teenaged protagonist
There is also a character who is clearly an adult being flirtatious with a minor, and another character (also a minor) refers to her friend "dating" the older man in an argument.
There are several scenes where minors in universe are sexualized by adults, one with a step-father adjacent figure and another is forceful with a stranger.
The movie opens with news that one teenager is missing, later revealed to be dead. Another teenager is confirmed dead later; neither of these are shown on screen.
There are abusive parents as well as other authority figures, there is also a brief scene in the beginning where a father forces his daughter to walk on her own home in a town where they know a teenaged girl has gone missing.