Bipedalism, or 'two-footed walking', is the story of a painter who grew up in an orphanage and only years later learns the circumstances of his father's disappearance and death. Childhood memories bring the main character back to the past: he buys a house in the suburbs that used to belong to his family. In the basement, he finds his father's archives and scientific research documents on the hybridization of human race with related biological species. Studying the archive material, he unexpectedly finds evidence of efforts to renew the experiments on the remaining hybrid population. The painter then becomes a researcher, and consequently a victim. The basic idea of his father's research was to change, control and influence the process of human evolution - initially connected with eugenics theories of the period before World War II, and now being placed in a context of modern 'biotechnological' expectations by his former colleagues. The main character tries to recreate and realize his father's heritage, who was forced to cooperate with state terror organizations, using the results of his secret research. In a tragic manner, this information turns into the main character's reality, at first forcing him to reappraise his father's values and later driving him to madness.
(http://www.input2002.com/en/film/24418.html)。由于比武,被自己打成重伤的柔术大师村井离开了人世。姿三四郎(藤田进 饰)觉得心中愧疚,无法面对爱人,所以远走他乡。当他重新踏上故土,却路遇美国大兵欺负弱小平民,正义凛然的他挺身而出,击退了不可一世的美国人。此后,他发现了很多在利用功夫 谋生而不是弘扬武学真义。在拳击比赛现场,他赫然见到一位武学泰斗要跟美国拳击手过招,只为用出场费养活生计。姿三四郎的内心非常挣扎,他觉得有必要为重塑武学精神做些事情。他破了三戒:喝酒、打斗、并在公开场地表演,只为重新打破某种陈规瓶颈,树立柔道之新意义。这时,两位空手道拳手前来挑衅,他们的父亲因为跟姿三四郎的比武而身受重伤,所以他们苦心修炼发誓报仇,一番龙争虎斗迫在眉睫……。