During the Tokugawa shogunate period, the samurai Sasahara Yisaburo (Mifune Toshiro), a samurai of Huizu Fanma Hui team, was superb in swordsmanship and scrupulously obeyed his duties and endured humiliation. One day, the lord Matsuhiro Matsuura (Takeo Matsuura) drove his concubine Ashi (Siye) out of his mansion for irreverence and ordered him to marry Ishaburo's eldest son and Goro (played by Kato). Forced by their loyalty to their lord, the Sakahara family finally accepted the marriage. After marriage, he loved each other with Goro and Ashi, and the marriage was happy. However, things suddenly changed, and Ashi's son, who was born in the city, became the heir of the clan. In order to avoid indecency, the clan wanted to recall Ashi. Dissatisfied with the lord's going back on his word, Izaburo strongly rejected the unreasonable request to make it. There was tension between the two sides, and Izaburo and Goro did not hesitate to defend the inviolable honor of the samurai with their blood. The film won the Sutherland Award at the British Film Institute Award in 1967, Best Director, Best Picture and Best Screenplay in 1968, Best Picture at the 1968 Daily Film Award, and International Film critic Award at the 1967 Venice Film Festival Phoebe Award.