本剧大胆描绘警匪黑白两道不同的世界，以细腻深入的手法来描绘警察的生活、办案过程及心路历程。剧中动作枪战的场面逼真精彩，男女感情线更是缠绵悱恻。本剧以毒品为主题，揭发时下最棘手的毒品危机——化学合成毒品，还有警方最先进的破案手法以及毒贩最新奇的犯罪技巧。探索毒品对青少年、白领阶层和社会的侵害，通过数位英勇但不同国界的肃毒员(扫冰者)的携手合作，对跨国贩毒活动予以打击的过程。故事以新加坡缉毒员王深与江迪辉分别被派往香港及台湾参与缉毒行动展开，文武双全的王深和香港警方合作破案无数，以坚定的意志对抗黑社会的百般诱惑，但黑帮头目十分赏识王深的义气与才干，便利用美人计来收服他，王深最终抗拒不了诱惑而迷失了方向。感性敏锐的江迪辉自来到台湾便委派当卧底，黑道老大高天义对他寄以重任，江迪辉面对黑白两道的信义而演变成正邪两难！最后江迪辉与王深在新加坡相逢，两位昔日好友一时感慨万千。到底谁会向黑道低头？谁会坚守警察的岗位？还是两人联手对付毒贩集团呢？
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