故事叙述叛出师门的童虎（高飞饰）为取得师门密藏之宝剑，率弟子夜闯师门。童虎虽成功击败师门众多子弟，得知宝剑所在，却苦于藏宝处需七星甲焉能开启之门。七星甲的持有者马奶奶（赵冈生饰）为一武术高手，惟其孙小狗子（孙国明饰）自幼因祖母的宠爱呵护而在武术方面并无深究。但在受到久别重逢的青梅竹马虎妞（邹美仪饰）的强势态度和惨败于为夺七星甲而来的童虎徒弟下，小狗子始体认到自己应致力于武学。于是在马奶奶的安排下，小狗子带着七星甲逐投师伯苟不理（梁家仁饰）处学习武艺。
　　一日，小狗子与苟不理回村探望马奶奶，岂知竟发现马奶奶早已丧生于上门夺甲的童虎一行之手，童虎等更向小狗子二人出手，欲夺得七星甲。幸在苟不理帮助下，两人全身而退。回到苟不理居所后，小狗子立誓将勤加练武，必为马奶奶报仇。

Rare was the film in 1973 that incorporated the star's name in the title. One of the few such films was Screaming Ninja, aka Wang Yu, King of Boxing. The story is set in China in the early 1900x. Essentially playing an extension of himself, action-star Wang-Yu spends much of the time defending himself against evil martial-arts masters. He also tries to make sense of a tragic incident in his past.

Rare was the film in 1973 that incorporated the star's name in the title. One of the few such films was Screaming Ninja, aka Wang Yu, King of Boxing. The story is set in China in the early 1900x. Essentially playing an extension of himself, action-star Wang-Yu spends much of the time defending himself against evil martial-arts masters. He also tries to make sense of a tragic incident in his past.

一位年青剑客, 一身盖世奇功"水月十三刀"扬名天下, 武林上各方高手纷纷向他挑战, 为要打到他不惜一切. 一天, 他处于一处不知名的岛上, 高手越渐迫近. 但最终都无人的打败他, 经过连场决战后, 他决意回到故乡找寻更高深的武学及更高强的高手.......

嵩山少林寺，自達摩祖師一苇渡江，開山授藝，创立少林派後，千餘年來，一直領袖着天下武林。及至淸乾隆年間，少林寺不幸爲淸廷鹰爪所控，假和尙智空，左道旁門，招收入一批俗家女弟子，修練走火入魔的「銅女功」，號稱十八銅女。有白玉鳳者，係浙南反清復明志士白云飛之女，十三年前，白家爲淸廷鹰爪殺害，僅留此女，投入少林寺中習武，即蓄意報仇雪恨，並設法與皖北啞奶幫的高手秘密聯絡，擬圖一掃寺中妖氛。但少林寺在鹰爪控制之下，寺中不下千間的宏偉殿宇，已成江湖上聚懼盛傅的【九曲連環宮】，密室連綿，到處精設致人死地的暗卡，人在其中行走，如不熟諳門徑，終生不得其門而出。名震大江南北的江西三醜暗中助戰，白玉鳳靑梅竹馬的情侶趙少俠亦來接應，均爲寺中武功極高的衆多怪僧所困。
十八銅女之首的索命嫦娥更百般引誘，對趙少俠極盡勾魂攝魄之能事 。銅女關凶險重重,後退一步卽無生路，速闖五關仍是死門，大戰一觸卽發，皖北啞奶滿殿游走，眼看功力逐漸耗盡，性命難保，而十八銅女更分眞、假、正、邪四路同時湧現，一個個武功出神入化，白趙等人各出奇招，與一批假和尙纏鬥，假和尙智空練得一身悍怪無比的天殘功，幸經索命嫦娥的反間一擊，當場弊命，是亦玩火自焚也，妖氣終得盡掃，邪惡消滅，淸廷鷹爪連根拔除，少林寺重戥「反淸復明」的旗幟。不料敵對雙方皆非其人，江湖詭譎，令人爲慄。白玉鳳、趙少俠亦非真者，但功成隱退，夕陽下共乘一騎而去，爲武林憑添一段愛情佳話。