『私人外(wai)教』介紹:夏(xia)威(wei)夷念(nian)大(da)學的香港富豪子弟(di)李(li)澤星(xing)(周星(xing)馳(chi)飾(shi)(shi))學業(ye)無(wu)成(cheng)揮金如土,是校園一(yi)霸(ba),終(zhong)因(yin)搭上黑(hei)(hei)幫(bang)老(lao)大(da)情婦遭黑(hei)(hei)幫(bang)追(zhui)殺(sha),身體(ti)被炸(zha)成(cheng)碎片。在李(li)澤星(xing)父親(吳孟達飾(shi)(shi))的請求(qiu)下(xia),教授(shou)(徐錦江飾(shi)(shi))將李(li)澤星(xing)全身人造復原,并把最新(xin)研制成(cheng)功的無(wu)敵(di)芯片置入其身,令(ling)其搖身一(yi)變(bian)成(cheng)為無(wu)敵(di)“百(bai)變(bian)金剛”。黑(hei)(hei)幫(bang)老(lao)大(da)得(de)(de)知李(li)澤星(xing)復活后,將寫有戰(zhan)爭(zheng)程序的芯片植(zhi)入手下(xia)身體(ti),令(ling)其變(bian)身“鐵甲(jia)威(wei)龍”前(qian)來(lai)追(zhui)殺(sha)李(li)澤星(xing)。為贏(ying)得(de)(de)暗(an)戀的女同學蟲蟲(梁詠琪飾(shi)(shi))的芳心,李(li)澤星(xing)決意重塑(su)形象,奮(fen)力(li)與“鐵甲(jia)威(wei)龍”展(zhan)開大(da)戰(zhan)。