绰号“Laughing哥”的(🔼)警员梁笑(😘)棠(谢(xiè )天华 饰(shì ))成(🎺)功完(wán )成卧(wò )底任务,并在(zài )CIB得到重任。但总(zǒng )管Harry(刘松(😎)仁 饰)和上司Jodie(陈法(👁)拉 饰),对他(tā )的操(🚥)纵(zòng )者之死有怀(huái )疑,在(😚)调(🍮)查中发现(🚸)其(🖍)中另有隐情(🤯)。在CIB招新后,Laughing和Jodie因训(🌑)练(liàn )理念不同,成(chéng ) 为一对欢喜冤家,互(🌞)有(yǒu )胜负,各(🙉)不相(xiàng )让(ràng )。Harry在照顾患癌(🤲)症的(de )妻子之(zhī )外,又(yòu )要面对因他坐(🚴)牢二十年(nián )(🕯)刚出狱的(de )前女友袁君(jun1 )岚(lán ),好(hǎo )在儿(ér )子Aidon舞技出(chū )众,又乐于助人,让他心安。为了(le )对抗(🔈)义(yì )兴,Laughing培植跛CoMichael((🐞)黄宗泽 饰)(📐)为线(xiàn )(🌂)人,后(👄)者逐(zhú )渐(jiàn )在(🔫)帮派头马辣(📞)姜(jiāng )与威利争(🍁)斗(🔲)中(zhōng )获得重用,并脱离了Laughing的掌控,与昔(😉)日(🚤)律师女(nǚ )友(🏸)姚可可(🈺)(徐子珊(👅) 饰(🐈))爱火重燃,并(bìng )(🚪)努(🐌)力上位(wèi )。随(😲)着帮派坐馆莫一(🙅)烈的回归,一场警匪卧底(dǐ )之(🏗)争、黑白人性缠(🎆)斗愈演愈烈……