Five college kids go to party at an abandoned cabin in the woods, while a group of scientists prepare a large experiment. Connection?
Inventive and witty re-invention of many tired horror tropes, and a fitting combination of Lovecraft and "X-Files" type governmental black ops. Easily the best horror film in a decade, and one that will hopefully steer the path away from overdone Saw-type films and tired inept remakes of 80s horror franchises. Unlikely, but one can hope.
Much later, I've come to the conclusion that this movie is in some ways a commentary on its target audience. The two surviviors are both irritating, self-involved, vapid little shits, who even if they understood the meaning of the facility and the ritual, stilll wouldn't go along with it, because it's all about THEM. Just like the majority of their millenial cohorts, who serve no purpose other than to consume and be future ISIS fodder.