Here is the basic plot according to IMDB.com:
A random class of Japanese ninth-grade students are--in this fictional universe--randomly selected by a fascist government lottery. They are kidnapped and forced onto an isolated island, where they are equipped with food, water, a map, and a random weapon. On the island, they have to compete in a violent death-match game till only one victor remains. Failure to follow the rules or participate in the death match results in death by an exploding collar that everyone has to wear.
This film is shot on a beautiful tropical island location. The beautiful scenery is a tremendous contrast to the violence and bloodshed that is going on. Also of notable contrast, is the beautiful music from classical composers such as Bach, Schubert, Strauss, and Verdi that plays in the background as some of the more sinister scenes transpire.
This is a gorgeously shot movie with great direction and great acting. I highly recommend this film! Check it out as soon as you can!
Click HERE to watch the trailer