This film is a must see. Especially for people who have a strong stomach, who like realism in their movies, who don't need to be impressed with outlandish special effects but prefer a solid plot.
A couple in love head out to an idyllic 'Eden'-like lake, and when they run into a group of teens, things quickly start getting out of hand. A layered, well shot, incredibly realistic and most of all deeply disturbing film.
Brace yourselves. You're in for quite a ride.