出身于犯罪世家的李志(zhì )坚（曾志(🏽)伟 饰(shì )）却从小(😘)立志做警(jǐng )察。皇(huáng )天(🍥)不负苦(kǔ )心人，终(🐉)于(🛤)借着(🍖)警(jǐng )队破例(🐮)收纳残(😧)疾人士的机会，个矮的李志(zhì )坚如愿(yuàn )加入(rù )警队并进入了(🗄)毒(dú )品调查(chá )组，在成(✳)功(🔲)完(wán )(🥄)成任(🚉)务(wù )(🏐)后，志(zhì )坚再入扫黄组，执行任务期间(🖍)被流莺恬妞（恬(tián )妞 饰）破(pò )处并爱(ài )上(shàng )(🚣)了对方，但恬妞很快消失(❔)于茫茫人海。志坚再调(diào )重案组，这(🐑)次的对手(shǒu )是(shì )极恶罪(zuì )犯(fàn )“无(wú )人(⛓)性”，志坚一举(jǔ )将无人性(xìng )击毙，引得(💠)无人性父(🤳)亲请(🥕)出(🕐)精于乔(qiáo )装的杀手“千(qiān )面人”（苗侨伟(💔) 饰(shì )）为儿子报仇，千(qiān )面人(➡)出手(🐛)连(🌹)害(⛏)多(duō )名警员(🤷)，重(chóng )案组一时风声(🐩)鹤唳，人人请调，李(lǐ )(🈺)志坚受命与千面人周旋到(📸)底，这位小(xiǎo )小小警察(🏃)的无厘头警员(🌂)经(jīng )(🔙)历(🌱)该如(rú )何(hé )收场(chǎng )？