无名（张家辉 饰）从小就无父无母，幸亏得到舅舅罗四海（王晶 饰）收留，无依无靠的无名自小就没人管，经常流连街头赌档，练得了一身精湛赌术。罗四海发现了无名的绝技，于是带着他与两个小弟阿骏（黎骏 饰）和贱男到深圳设局骗钱。四人在深圳行骗时得罪了本地老大猛哥（龙方 饰），在猛哥面前无名凭借一手绝活博得赏识四人才得以解围。回港后无名邂逅了一个盲人女模特苦儿（舒淇 饰），阿骏看出了无名的心思，向他保证能帮助追到苦儿，条件是传授他赌术。无名爽快应承了。猛哥来港找到了无名，逼他用赌术为他赚钱，无奈之下无名只能答应。岂料阿骏赌术学成后，乘机打盲了无名，在猛哥那里取代了无名的位置。无名最终命运如何？

"Carol Jeffries (known as 'Jeff') is a naive American woman staying in the Phillipines. She is given ten years in prison after being set up by her drug-dealer boyfriend, Rudy. She endures the harsh conditions, sadistic head matron and attempts on her life, then convinces her cell-mates to try to escape with her through the jungle, in spite of the knowledge that ruthless trackers will be sent out after them. ”“ Legend has it that Sam Arkoff, head of American International Pictures saw a statuesque Grier at his company switchboard and cast her on the spot for her breakthrough hit Coffy. That, as they say, is bull shee-it. The former beauty queen made her film debut in 1970 as an extra in Russ Meyer's big breast bonanza Beyond The Valley Of The Dolls, and appeared in a number of B-pics shot in the Philippines the following year for AiP's rival company, Roger Corman's New World Pictures. Alongside her role as the tough-as-nails prostitute in Big Doll House were supports in the horror flick The Twilight People and as a topless hooker (again!) in Cool Breeze, then back behind bars for Women In Cages.In Women In Cages, Grier plays the sadistic warden for once, a pot-smoking lesbian with a fully-equipped torture chamber (including a guillotine!). The 'New Fish' (a recent inmate, for you prison film novices), a ditzy blonde ex-stripper called Alabama, has taken the heroin possession rap for her pimp boyfriend. She knows too much, so the pimp blackmails her cellmates to execute her. A competent and well-shot entry in the tropical prison genre from Filipino director Gerry De Leon, it places the embittered ex-addict and prostitute Grier in the position of slave owner, watching her white charges toiling away in the plantation with obvious ironic glee."

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……

学习成绩优异的水谷雫（土屋太凤 饰）性格冷淡，不愿与周围的人打交道。这一天，她被老师委派去给一位许久不曾来校的男生送作业。那个男生名叫吉田春（菅田将晖 饰），开学第一天就因为打架斗殴而被停课，但是处分解除后也迟迟不见他来学校。见了面才发现，传说中凶神恶煞一般的吉田其实是个十分单纯的大男孩，他会因为别人对他的好而欣喜非常。出于对小雫的信任，吉田终于回到学校。在此期间，夏目朝子（池田エライザ 饰）、山口贤二（山田裕贵 饰）等性格各异的青春男女也相继聚到他们身边。男孩女孩的青春注定不留白……本片根据ろびこ的同名漫画改编。