1999年，澳门(mén )(🥇)回(huí )归(guī )中(🏽)国(guó )(🐌)前(🍩)。澳(ào )(🌰)门(mén )(🃏)司警(jǐng )马(mǎ )(🕟)振(zhèn )成(chéng )(🛍)（杜(🕰)汶泽饰）(🎺)因惹(rě )(🎗)上(shàng )(🎹)是(shì )(🆖)非遭(zāo )(🐉)停(tíng )(🛤)职(🌰)，警察(chá )(🏴)生涯(yá )即(jí )将(💤)终结。马(🌫)振(👋)成(chéng )与(yǔ )(🎲)伙(huǒ )计(❣)仍(🌗)然(rán )夜(yè )(♑)蒲(pú )，盲(🚤)打(dǎ )误(wù )(⚫)撞(zhuàng )(🐿)遇(🕔)上(shàng )一(yī )名(míng )(🎩)神秘少(🛍)女(🎡)张(🕖)碧(bì )(🕯)欣(👁)（梁(💆)洛(✳)施(shī )饰(shì )(🥄)）。张碧(🚥)欣(xīn )(🐖)随(suí )之(zhī )(🛺)跟(gēn )着(zhe )马振成(chéng )(🗑)回(huí )(😚)家，醉(zuì )(🙁)酒(jiǔ )醒(🚸)来(🖍)的(de )(🚑)马(mǎ )振(zhèn )(🥀)成(🕕)以(🤯)为(😱)自己(jǐ )与对方(⏺)有(🚢)了(le )一(yī )(📎)夜(yè )情(qíng )，再(zài )加(🌚)上(shàng )(📯)碧(bì )(🚨)欣(xīn )声(shēng )称是(shì )他与(yǔ )初(💱)恋情人(🎛)分手后(🥎)生(shēng )下的(de )女(nǚ )儿(ér )(📙)，更(gèng )(✋)加(jiā )令(lìng )马(mǎ )(🙌)振(🤠)成错愕(è )(🙄)不已(👓)。 　　碧(⏰)欣(xīn )(🈴)因(🍄)欠(qiàn )租(zū )(🥫)数(🤷)月(👃)以(🧤)致无(wú )(🚻)家(🤲)可(kě )(🕙)归，其(💠)心(👺)爱(⛳)的狗(gǒu )狗(🎋)伊(yī )莎(shā )(🕐)贝(🐀)拉(lā )亦(yì )被(bèi )无良(⚾)业主(🌮)赶(gǎn )走(zǒu )(🗳)，下(🈁)落(luò )(❕)不(💝)明。身(🏉)为(🥊)父(🍑)亲(qīn )的(de )(🛎)马(mǎ )(💍)振(zhèn )(🚗)成(🐾)希望能弥(➡)补(bǔ )以(yǐ )往的(⛏)责任(rèn )，其(🤷)后碧欣(💅)坚(jiān )(🌼)决要(💹)与(yǔ )(📟)马振成(chéng )(😝)同(🔈)住(🏒)，令(lìng )一向放(fàng )(🈺)浪的(de )马(mǎ )(🔍)振(zhèn )成(chéng )(🤥)生(shēng )(⏲)活(huó )(📛)顿(dùn )起(👌)变(biàn )(💏)化。 　　为(🥅)求(🐞)自(🍽)保，马振(🚲)成(📐)企(qǐ )(🔎)图以身(shēn )(🌱)犯(fàn )险(xiǎn )(🐖)令(🆙)自(🖍)己得以(🔥)脱罪(zuì )，他(⏳)的(🏓)好友(yǒu )(🎐)杜(dù )(🍁)Sir（黄秋生(📤)饰(shì )(🚻)）(🍺)亦(yì )屡(lǚ )劝(👚)无(wú )效(xiào )。张(zhāng )碧(💅)欣(xīn )(🤼)欢欣鼓(gǔ )(✖)舞地准备(bèi )(😉)与(yǔ )(🚤)父(fù )亲落草(cǎo )(🏸)，对着(🈺)同校(xiào )(🧥)男(🔮)生也(🈳)难(nán )掩(yǎn )(🔬)得(dé )(🍯)意(yì )(🔍)之(🌲)色(sè )。然而(ér )渐(jiàn )渐地(💛)马(mǎ )(👼)振(zhèn )成(🐅)从(⛅)张(zhāng )碧(bì )(✒)欣(xīn )身上(shàng )，体(tǐ )会到(🕵)什(shí )么(🚓)是(shì )(📯)责任(rèn )。