The Cabin in the Woods

In a high tech underground facility, senior technicians Sitterson and Hadley discuss plans for a mysterious operation. A similar operation undertaken by their counterparts in Stockholm has just ended in failure. Elsewhere, American college students Dana, Holden, Marty, Jules, and Curt are spending their weekend at a seemingly deserted cabin in the forest, a cabin recently acquired by Curt's cousin. From their underground facility where they possess significant technological control over the area in which the cabin is situated, Sitterson and Hadley manipulate the students by intoxicating them with mind-altering drugs that hinder rational thinking and increase libido. They take bets from coworkers as to what kind of monster will attack the students and discuss the failures of similar rituals in other nations. Read more on Wikipedia.