海洲(🕕)市(🍅)公安局(jú )长遭(zāo )(⛲)遇枪击昏迷(📒)不醒,原(🔼)省(shěng )公安厅刑侦处处长田丰临危(wēi )(🎺)受命(mìng ),空(🆖)降(jiàng )海洲任(rèn )代(dài )理(lǐ )(🔬)局长之职(zhí ),在副局长胡克艰和刑警(jǐng )(🌗)队长赵(zhào )梦楠配合下对冉江案展(🤷)开(🗄)全(🛍)面(miàn )(🎡)调查。此(🙍)时,神秘(mì )杀(🛹)手再次(cì )现身医院,试图接近冉(🍮)江。在调查杀手的过程(🤯)中,又(🤷)一位(💞)知名企业家遇害,俩家涉黑KTV的(🔢)领班杜大浩走入(rù )警方视线,成为最(zuì )大(dà )嫌疑(🙌)人。同时,几次大(dà )的扫黑行动也因泄密而失(shī )败(bài ),警局内(nèi )部(bù )潜伏着黑帮卧底,警察也(yě )收(shōu )(🧣)到(dào )来(lái )自黑帮的(🗳)重要线报。一场关于卧底与(yǔ )反卧底(🦇)的盘(pán )查(➡)在警(🐛)局和黑帮内部(🤷)展(🃏)开,究竟(jìng )谁(💹)是(shì )卧(wò )底?黑白之争、正邪(🈺)之战,又将(🤥)何(⏲)去何(🔤)从(cóng )?