Three friends, who are all former military, get together after some years and decide to explore a cave that's been closed off. There are two guys, Adrian and Victor, and one woman, Charlie. We learn that Charlie used to date Viktor but is now with Adrian-and that it may pose an issue for this expedition. Yep, it sure does.
It's a decent thriller, because you don't know quite what to expect, and the cave shots are well-done, along the lines of THE DESCENT. However, the ending seems to be tacked on and seems like a segment of WOLF CREEK, which really doesn't work with the rest of the movie.