改编自小松重男的小说《 蚤とり侍》，阿部宽饰演的武士因得罪了藩主而被流放为打着除猫蚤的名号实则向女顾客卖“肉”的“工口武士”小林宽之进。第一个客人小峯（寺岛忍饰）神似其亡妻，谁知才几分钟就被骂床技差，于是他下定决心磨炼起了床笫之术。

改編自小松重男的同名小說，江戶時代牛郎店實錄，男女「交流」爆笑極品！歷史傳奇「抓貓蚤屋」真實面貌大揭密。票房巨星阿部寬喜感演出超越《羅馬浴場》武士變牛郎，床上他最強；《惡女羅曼死》柏林影后寺島忍變身狂野慾女，超顛覆喜感爆發。武士小林寬之進（阿部寬　飾）白目觸怒長官而被貶去「抓貓蚤」，但沒想到抓貓蚤是假，陪睡才是真！無奈的他首次下海就慘遭客訴，為了一雪前恥，他找上了江戶第一花花公子清兵衛（豐川悅司 飾）學習房中秘術，究竟中年轉職的他能否能修成絕技稱霸鳥林呢？ 除蚤武士，Nomitori samurai，のみとり侍，Flea-picking Samurai

Hironoshin is a samurai of the Echigo-Nagaoka clan. One day, Hironoshin attends a party at a mansion in Edo where his lord, Tadakiyo is invited to recite poems. Hironoshin is asked to give his opinion and foolishly comments that the piece was plagiarized. Infuriated, Tadakiyo orders Hironoshin to live his life without honor as a ‘cat flea picker', which is in fact a pseudonym for a male prostitute. The honest and straight-shooting Hironoshin convinces himself that he has no other options, and resigns himself to live as a sex worker. Hironoshin becomes an apprentice to a flea-picker boss who encourages him, convinced that Hironoshin is exacting revenge in the guise of a prostitute.

Hironoshin Kobayashi est un samouraï du domaine de Nagaoka. Un jour, il irrite le daimyo. Le daimyo lui ordonne d'arracher les puces des chats et de gagner un salaire journalier. En fait, son travail consiste à donner des services sexuels à des clientes.

作家・小松重男の時代小説「蚤とり侍」を、『後妻業の女』などの鶴橋康夫監督が映画化した時代劇。裏稼業である「のみとり」を命じられた武士が、人々に助けられながら奮闘するさまを描く。エリート藩士から「のみとり」になってしまう主人公に阿部寛がふんするほか、寺島しのぶ、豊川悦司、斎藤工、風間杜夫、大竹しのぶ、前田敦子、落語家の桂文枝らが出演。

어엿한 사무라이였던 고바야시는 사고를 치고 고양이 벼룩을 잡는 사무라이가 된다. 하지만 실제로 해야 하는 일은 남창이다. 게다가 섹스를 못한다는 조롱을 받자, 사무라이의 자존심을 걸고 최고의 벼룩 잡는 사무라이가 되기 위해 그야말로 온 몸을 바친다.