Down-on-his-luck veteran Tsugumo Hanshirō enters the courtyard of the prosperous House of Iyi. Unemployed, and with no family, he hopes to find a place to commit seppuku—and a worthy second to deliver the coup de grâce in his suicide ritual. The senior counselor for the Iyi clan questions the ronin’s resolve and integrity, suspecting Hanshirō of seeking charity rather than an honorable end. What follows is a pair of interlocking stories which lay bare the difference between honor and respect, and promises to examine the legendary foundations of the Samurai code.

1967 film by Kihachi Okamoto

昭和39年，民政党现任总裁寺田政臣（久米明 饰）战胜最大对手酒井和明（神田隆 饰），获得连任，双方为此投入总计近40亿日元的选举金。选举后数日，隶属寺田派的星野官房长官的秘书西尾拜见有金融王之称的商人石原参吉（宇野重吉 饰），明确表示希望石原帮寺田派弥补竞选后留下的两亿日元欠款。石原断然拒绝后，请日本政治新闻社社长古垣（高桥悦史 饰）调查幕后之事。
调查得知，九州福流川水库正在招标，星野康雄（仲代达矢 饰）意欲让曾为民政党贡献大笔政治献金的竹田建设中标，而负责招标的电力建设公司亦另有打算。石原的介入揭开了虚伪政治背后的丑恶一面……

A nameless ronin, or samurai with no master, enters a small village in feudal Japan where two rival businessmen are struggling for control of the local gambling trade. Taking the name Sanjuro Kuwabatake, the ronin convinces both silk merchant Tazaemon and sake merchant Tokuemon to hire him as a personal bodyguard, then artfully sets in motion a full-scale gang war between the two ambitious and unscrupulous men.