"Men behind the sun 3" is basically a boring attempt to build a story around a few of the soldiers in unit 731. Where the first movie was a shocker in graphical content, MBTS 3 is a drag and adds nothing new in terms of gore. Apparently, director Godfrey Ho (or possibly the producers) decided that having any special effects would be too expensive, so they cut in clips from the previous movies at more or less random places - something that seems to be a key part of Ho's film-making philosophy.