Saw 3D Plot Summary: Allright, the movie starts out with the classic saw opening, someone in trouble trapped or chained in a room and we have no idea how they got there, after 4? or is it 3 of these movies we know what the gimmick is but it still works and intrigues I think becuase it is such a bizarre and intense emotional premise that it succeeds. Apparently the public agrees as it opened in the first spot again. The 3d adds a bit as well.