湾(wān )仔(zǎi )区巡警陈(chén )俊杰（陈(chén )奕迅）因(yīn )为(wéi )七年来每日所做都是极有(yǒu )规律(🔧)毫无变化(huà )的工(🛤)作(🌰)，渐渐对警察(chá )一(yī )职失去(qù )激情(👋)，上面派(❣)来小师妹廖(liào )得(🚤)男(🖲)（容祖(🕔)儿）与他(tā )一(🗄)起巡(🎡)逻时，眼见(💆)对方满(mǎn )腔热情事事(🐖)认真，他冷眼旁观(guān )之(🍮)余，会不时(🖍)地冷嘲热讽，遇(🐖)到疯(fēng )子王成（(🌙)吴(wú )镇宇(yǔ )）时，陈(📯)俊杰也只当他为精神病(bìng )(🌑)人指(🌊)给(gěi )廖得男看。