Before Toei got into mass producing martial arts movies (other than samurai flicks), there was a handful of films to that mixed yakuza storylines with hand to hand fighting. This one is a ninkyo yakuza judo film. Hideo Murata is an honourable gangster who tries to assassinate rotten boss Hosei Komatsu but gets his own ass kicked. Young judo fighter Hiroki Matsukata comes to rescue. Meanwhile Komatsu gets bodyguard Tomisaburo Wakayama to look after him. Wandering karate fighter Saburo Kitajima who dislikes both Komatsu and Matsukata appears and further complicates things.