『野蠻奶奶大(da)戰』介紹:2043年(nian)(nian)7月1日,犯罪(zui)大(da)王將(jiang)軍(盧惠光飾(shi))被捕,一星(xing)(xing)期后由(you)鐵(tie)(tie)面(mian)無私(si)的法(fa)官余鐵(tie)(tie)雄(xiong)(xiong)(xiong)(張衛健(jian)飾(shi))主審。將(jiang)軍特(te)派其黑(hei)社會爪牙健(jian)(鄭伊健(jian)飾(shi))返回50年(nian)(nian)前尋找鐵(tie)(tie)雄(xiong)(xiong)(xiong),并(bing)將(jiang)其洗腦(nao)使他無法(fa)進行審判。政府(fu)知(zhi)情(qing)后特(te)派飛龍(long)特(te)警鐵(tie)(tie)面(mian)(劉德華飾(shi))、掃帚(zhou)頭(tou)(張學(xue)(xue)友(you)飾(shi))及發達(da)(da)星(xing)(xing)(任達(da)(da)華飾(shi))返回1993年(nian)(nian)去保護鐵(tie)(tie)雄(xiong)(xiong)(xiong)。 時大(da)雄(xiong)(xiong)(xiong)為93年(nian)(nian)一中學(xue)(xue)長期留班(ban)生,常遭同(tong)(tong)學(xue)(xue)余忌(ji)安(許志安飾(shi))作弄毒打(da),只(zhi)有女友(you)采妮(楊采妮飾(shi))對他真心。飛龍(long)三特(te)警混進學(xue)(xue)校(xiao)(xiao),掃帚(zhou)頭(tou)當上老(lao)師(shi),鐵(tie)(tie)面(mian)做大(da)雄(xiong)(xiong)(xiong)同(tong)(tong)學(xue)(xue),星(xing)(xing)則任大(da)雄(xiong)(xiong)(xiong)跟班(ban),幫大(da)雄(xiong)(xiong)(xiong)打(da)贏忌(ji)安,并(bing)向他套(tao)取鐵(tie)(tie)雄(xiong)(xiong)(xiong)下落(luo),但(dan)大(da)雄(xiong)(xiong)(xiong)卻表示校(xiao)(xiao)內并(bing)無鐵(tie)(tie)雄(xiong)(xiong)(xiong)此人。在(zai)這時健(jian)亦扮成老(lao)師(shi)混入學(xue)(xue)校(xiao)(xiao),另一邊大(da)雄(xiong)(xiong)(xiong)母親要改嫁理(li)查德余……最終飛龍(long)特(te)警能完成任務嗎(ma)?