Set in Japan during an unspecific year of the Edo period, the story follows Ogami Ittō, the Royal Executioner for the Royal Court who is stripped of his title when falsely accused of treason by a rival faction. Paying the ultimate price for this falsehood, his wife is murdered and Ogami wanders the countryside, pushing a baby cart with his 3-year-old son Daigoro inside, to take their vengeance on the Yagyu clan who have made all this happen. —themoviedb.org
He debuted as a movie director with “Tange Sazen: Kokezaru no Tsubo (Tange Sazen: The Kokezaru Pot).” He was one of “the Daiei trio” together with Tokuzo Tanaka and Kazuo Ikehiro, who supported the Daiei shooting studio in its prime. He established his position as a great period film director by the “Zatoichi” series starring Shintaro Katsu, and “Ken (The Sword)” and “Nemuri Kyoshiro” series starring Raizo Ichikawa. The spectacular scenes in the film version of “Kozure Okami (Baby Cart)” starring Tomisaburo Wakayama made a big impact on Sam Raimi and others in film industry. He received the 11th Galaxy award for his TV drama “Tenno no Seiki (The century of the emperor).” On September 24, 1975, he died from liver cancer. —horror-house.jp
If you haven't watched any film from the series, read the review by Pierluigi here; his comparison will let you know more or less what to expect. The film is enjoyable not only because of the beautiful swordplay (and violent, although it IS a samurai movie) but also for the resulting approach to life after antihero Ogami Itto leaves the path of bushido with his baby son in order to seek revenge. Influential, classic.
My knowledge in japanese samurai films is a bit narrow, but I’ll take the chance to draw a parallelism between east and west cinema that could sound blasphemous or stupid to somebody who knows more… read review