在这部奇门遁甲喜剧/动作/奇幻/古装片中,清康熙二年，八旗总教头高雄（高雄 饰）因触犯满汉通婚之法，被肃亲王指使蝙蝠法师（袁信义 饰）截杀，危急关头高雄绑架肃亲王的小贝勒出逃，岂料他意外将小贝勒勒死……十四年后，江湖上有“奇门”（梁家仁 饰）和“遁甲”（袁祥仁 饰）的师兄妹法力高强，虽然他们为人古怪但却不时造福一方，在奇门遁甲生活的镇上，就潜藏着隐姓埋名多年的高雄，高雄当年拾到一个孤儿“树根”（袁日初 饰），尽心尽力将其抚养成人。不久高雄身份暴露，蝙蝠法师再度追杀，并计划将树根伪装成昔日失踪的小贝勒，以便令自己控制朝廷。高雄力战蝙蝠法师身死，树根只得向奇门遁甲二人求助，随引发连场不可思议的法术对决……

Former Royal Guardsman Kao was forced to be on the run when his superior couldn't tolerate him being a Manchu marrying a Han woman. A young prince was inadvertently killed when he kidnapped the boy to aid in his escape. 14 years later, Kao now a drunkard ridden with guilt, has been living with a young orphan by the name of Shu Geng. Also introduced are two wacky old bickering sorcerer couple, Old Man and Old Spinster, who are always competing with each other over the most trivial matters. Before long, the old nemesis of Kao, the powerful Socerer Bat, found his whereabouts and killed him. Harboring evil ambitions, Sorcerer Bat forces Shu Geng to impersonate the belated prince, with the intention that one day he can ruled alongside the would-be king. Shu Geng manages to escape, amid strange encounters with the clown in-the-jar, and meets the two even stranger bickering magician couple, who teach him their craft. The rest is a typical revenge motivated plot, in which the young prodigy learn the martial arts to defeat the villain. The setting however, is not so typical as the finale takes place in a sorcerer competition where Shu Geng faces not only the evil Bat, but also countless other sorcerers, each possessing his own unique magic and abilities. The choreography and inventiveness of the fights make this early collaboration of the Yuen brothers stand out among the work of Yuen Woo-Ping, who move on to become on of the most sought after action director in the business today.

《奇门遁甲》是一部很萌的电影。《奇门遁甲》里的道教文化。【关灯拆电影】这才是真正的香港电影，这样的天马行空如今却见不到了。《奇门遁甲》与《大内密探零零发》的关系。82版《奇门遁甲》里的奇妙创意+法术。人有多大胆，地有多大产。演技大佬们。载入史册。百看不厌 天马行空。《奇门遁甲》——学法术的人想法少才能长寿。