上(shàng )世纪五十(shí )年代,海外学(🥇)子计丹(🏽)阳归国,投身(shēn )国防科研工(🔱)作。抵达香(🎺)港后(hòu )陷入敌特圈(quān )套。公(🔬)安庞红梅保(bǎo )(💤)护计丹(dān )(📿)阳安全回到祖国,但敌(dí )特在香港(gǎng )失败后,继(jì )续围(wéi )绕我方设(🕯)在泸门的(✳)“水(🥄)滴工程”,部署了“磐石(🥞)计划”,由特(tè )务“雪狼(láng )(🐶)”主持,试图破坏我(⏺)方(fāng )科(kē )研(📎)任务。为(🥁)保(bǎo )证(zhèng )水滴工(gōng )(⏯)程的(🖲)顺利开(kāi )展,以庞红梅(🥎)为代(dài )表的公安人(✋)员与敌特们(🤸)展开数次交锋,但(⛓)每到(dào )科研的(de )(⛏)关键节(jiē )(👃)点,敌特总能先一步部署破坏计(🥕)划,雪(🧟)狼仍未找(⚾)到(dào ),敌特仍在暗中(zhōng )破坏“水(shuǐ )滴工(👊)程”,庞红(🦇)梅等(děng )众公安(ān )在(zài )泸门(🐨)与(yǔ )敌特进行了一场生死(sǐ )较量(💯)……