A group of new friends go camping on their last night traveling together to a music festival. They wager a free weekend pass to the winner of a ghost story contest, but a chance encounter targets them before they even get started. As the scary stories progress, the realization begins to sink in that the subject matter is perhaps more connected to reality and their current situation than they first thought. They each face different elements of fear and perception as one by one they are turned against each other.
Both beer and wine are consumed in the same night. One character very quickly drinks half a bottle of wine. Characters slur their words and have droopy eyelids.
A character is portrayed in a way that it seems like he could be mentally ill (in the stereotypical horror movie way) and is about to be violent, but trying to avoid spoilers I'd still say no given the way that part plays out. But it might still be upsetting all the same.