Six months prior to the beginning of the film, a group of recon soldiers are sent to "R-Point", a strategically significant island south of Saigon. Radio contact is lost, and they're presumed dead, until six months later ("present day" in the film's sense) radio transmissions are received claiming that the soldiers are alive and in grave danger. A squad of 9 soldiers, led by hardened veteran Lt. Choi, are dispatched to find them and bring them home.
What follows isn't an action-heavy horror movie, but a more tense, atmospheric exploration of the lines between the supernatural and reality. Surrounded by miles of jungle and rumours of ghosts, the soldiers begin to crack under the pressures of their situation and begin to turn on one another. It's difficult to describe what they encounter without making it sound trite or clichéd (R-Point is neither), but the physical pressures of the jungle combined with the psychological pressures of the legends of R-Point are captured brilliantly both by the camera-work and the actors portraying their private descents into madness.
Atmospheric and full of suspense, R-Point is tense, very creepy, and definitely worth watching. It never goes over the top and remains tight and controlled. Horror movies and war movies cross over well, it seems. After is, war is hell, and in R-Point, each soldier certainly goes through that.