In pre-war Japan, two members of a large yakuza syndicate instigate a turf war that embroils the highest echelons of Tokyo's underworld.

Kanno is a Yakuza. He had to kill Matsuoka who betrayed their boss. Kanno knew Matsuoka had a 3-year-old daughter named Youko. Before he gave himself to the police, he asked his trusted man to take care of her. While in prison, Kanno kept sending letters to Youko, disguising as an uncle in Brazil. 15 years later, Kanno is released. He is determined to live legitimately, however the Yakuza has not forgotten his wicked deed!