The action takes place in 1932. After the death of the karate teacher the ways of his students has separated. One is going to serve in the military police, where fighting techniques is used not only for self protection – the fact that contradicts the canons of this martial art. The second tries to live by the rules, until the life forces him to fight against the mafia and the military police to protect his loved ones. During this confrontation, the former comrades in order to achieve their goals will have to apply their skills against each other.