The film is an anthology that explores the brutal enforcement of Yakuza codes over three different historical periods. In the first segment, set during the Edo period, a betrayed samurai seeks revenge against his clan's elders who unjustly accused him of treachery and subjected him to gruesome torture. As he carries out his retribution, the film exposes the strict and cruel codes governing samurai loyalty and honor in feudal Japan. The story transitions to highlight the unrelenting violence wielded by gangsters to maintain power and discipline within their ranks.

The second segment shifts to the Meiji era, focusing on a gang leader caught in a power struggle as he tries to impose traditional Yakuza laws amidst rapid societal modernization. His attempts to maintain control lead to internal conflict and deadly consequences, emphasizing the rigid codes even in times of change. The final segment takes place in the Showa era, depicting a violent feud between rival Yakuza factions. Here, a young gangster rises through the ranks by ruthlessly adhering to and exploiting the Yakuza's stringent laws. His rise fuels an escalating cycle of retribution and bloodshed, highlighting the destructive and unyielding nature of these codes on individual lives and broader society.