Kôichi Kitami

A love triangle develops between a benevolent student, his innocent girlfriend, and a cruel petty criminal, all as a point of diagnosis of a social disease that had Japan slowly succumbing to lawlessness during the post-War era.

Hidejirō is sent to prison after killing the boss of a rival family. After being released, he discovers that his family has scattered and he is taken in by a company of quarry workers, whose boss has a strict code of non-violence. When the rival family tries to take over the company and kills their boss, Hidejirō must choose between his promise of non-violence and his yakuza code of revenge...