When a man is mysteriously murdered in Tokyo, the US Army plants it's streetwise investigator "Eddie" (Robert Stack) into the city with a mission to inveigle himself into a gang of petty American racketeers. It's quite easy for him get their attention, but securing the trust of "Sandy" (Robert Ryan) isn't so straightforward, especially as his sidekick "Griff" (Cameron Mitchell) is both wary and jealous of this new addition to their numbers. As this gang start to become more ambitious with their criminal activities , "Eddie" finds his position becoming more and more perilous. Can he survive the...