1999年(nián )，澳(ào )门回(huí )(📼)归中国(guó )前(qián )。澳(ào )(🌰)门(mén )(🃏)司(sī )警(jǐng )马(mǎ )振成（(🔱)杜(dù )(🕰)汶泽(🤴)饰(shì )(🍥)）(🎺)因惹上是非(fēi )(🥈)遭(🐉)停(🛤)职(zhí )，警察生(🗼)涯(yá )(🐮)即将(jiāng )终结(jié )(🎾)。马(mǎ )(🌫)振(zhèn )(👋)成(⏬)与(yǔ )伙(🎏)计仍(réng )(🌗)然(rán )(🏇)夜(♑)蒲(📼)，盲(🚤)打(dǎ )(🖲)误(wù )(⚫)撞(zhuàng )(🐿)遇上(shàng )(🔸)一名(🎩)神(shén )(🤷)秘(🗄)少(shǎo )女(nǚ )张(zhāng )(🕖)碧欣(👁)（(🙍)梁(💆)洛(luò )施(shī )饰(🥄)）。张碧(bì )欣(xīn )随(🕌)之(🛺)跟着(zhe )马振(zhèn )成回(😚)家(jiā )(🍮)，醉酒(jiǔ )醒来的(🚑)马振(🥀)成(chéng )(🕕)以(🤯)为(😱)自(zì )己与(yǔ )(🔊)对方有了(le )(🌙)一夜情(qíng )，再(zài )加上(shàng )(📯)碧(🚨)欣(🛑)声(shēng )(⏯)称是(shì )(🖲)他(🔢)与(yǔ )(❔)初(💱)恋情(qíng )人(rén )(🎛)分手后(🥎)生(shēng )(🥔)下(💻)的(de )(🗞)女(nǚ )(🙂)儿，更(✋)加(jiā )(🐑)令(lìng )马(🙌)振(zhèn )成(🤸)错(cuò )(🌞)愕(🙄)不已(👓)。 　(⛓)　碧(bì )(⏰)欣(xīn )因欠(qiàn )租(zū )数(shù )月(yuè )以致(zhì )(🔔)无(🚻)家(jiā )(🤲)可(kě )(🕙)归(guī )(⛳)，其(qí )(💠)心爱(ài )的(🏯)狗狗(gǒu )伊(yī )莎(🕐)贝(🐀)拉(lā )(🧟)亦被(🧣)无(wú )良(⚾)业(yè )主(zhǔ )(🌮)赶(👣)走(🗳)，下(xià )落不明(💹)。身(🏉)为(🥊)父亲(👊)的(🛎)马(mǎ )(💍)振成(chéng )希(🦇)望(wàng )(😊)能(néng )弥(mí )(➡)补(bǔ )(🏻)以(yǐ )(🐛)往(🌹)的(de )(⛏)责任(rèn )，其(🤷)后碧(bì )(🌪)欣(xīn )(💅)坚决(🚶)要(yào )与(📟)马(mǎ )振(zhèn )成(😝)同住(🏒)，令(💿)一(yī )(🎥)向(xiàng )(🐡)放(fàng )浪(làng )的马(🔍)振(😙)成(🤥)生(shēng )(⏲)活(huó )(📛)顿(dùn )起(qǐ )变化。 　(♌)　(💸)为(🥅)求(🐞)自保，马(mǎ )振(zhèn )(🚲)成(chéng )企图(🌂)以(yǐ )身(shēn )犯(fàn )险令(lìng )自(zì )己(jǐ )得(dé )(💣)以脱(tuō )(🚡)罪(zuì )(🌸)，他(tā )(⏳)的(de )(🏓)好(🚽)友杜(🍁)Sir（黄(👗)秋(🎦)生(shēng )(📤)饰(shì )(🚻)）(🍺)亦(yì )屡(🐂)劝(quàn )无(wú )(🛃)效。张碧欣欢欣(xīn )(📬)鼓(gǔ )舞(wǔ )(🕺)地(💑)准(zhǔn )备(bèi )(😉)与(yǔ )(🚤)父亲(qīn )落(luò )(⛴)草(cǎo )，对(duì )(💁)着(zhe )同校(xiào )(🧥)男(nán )(🔮)生(👅)也(yě )难(nán )掩(yǎn )得(🍯)意之(🌲)色(💕)。然而(ér )渐(jiàn )渐地(💛)马振成(chéng )(🐅)从(cóng )张(zhāng )碧欣(xīn )(💨)身(🈸)上(shàng )(🙅)，体(tǐ )(🛌)会(huì )到(dào )什(shí )么(me )是(📯)责(zé )任。