Jigsaw locks a few unlucky people in a booby trapped shelter and they must find a way out before they inhale too much of a lethal nerve gas and die. But they must watch out, for the traps Jigsaw has set in the shelter lead to death.

http://www.imdb.com/title/tt0432348/

http://stage6.divx.com/user/daxjjj/video/1336883/saw2