棋拳是新兴运动，运动员需同时比拼拳击与国际象棋，是揉合智力与武力的运动。影片则以反贪处长和黑帮老大的一盘中国象棋，处长以棋术压倒心术不正的对手，还破了对方贿赂海关、利用拳馆打棋拳、走私烟洗黑钱的大案。
Set in 1895, the film follows friends Ed and Frank who become brutal enemies in Oklahoma frontier territory when a rivalry develops over a woman who is set to inherit a prominent saloon. After a bounty hunter makes Ed disappear to a tortuous prison run by a sinister warden, he must learn the ways of an outlaw from a prison-mate to escape and exact his revenge.
该剧设定在幕府为财政进行享保改革时期，有江户幕府“中兴之祖”、“暴坊将军”之称的德川第八代将军德川吉宗的时代，讲述作为他的精神支柱一直在背后默默支持他的侧室久免的人生故事。
