讲述了蕾雅身为警察的妹妹，在一次与哥哥同行的途中经历了一场意外事故，哥哥当场死亡，在接受手术治疗后，蕾雅的嗅觉神经变得十分敏感。蕾雅怀疑哥哥的死与当时哥哥正在调查的关于富商瓦善贩毒的案子有关。为了调查哥哥死亡的真相，蕾雅利用灵敏的嗅觉帮助哥哥的好友普密警长调查案件。调查时，蕾雅遇到了歌手齐宇并对他产生了好感。但每次齐宇出现，瓦善身边的人都会遇害，通过调查这些命案，蕾雅发现齐宇正在用自己的方式报复瓦善，而瓦善同时也是杀害自己哥哥的凶手。但是，蕾雅并不赞同齐宇的复仇，而是选择与普密联手，最终用法律制裁了齐宇，而齐宇也在蕾雅的感化下，选择报警自首，在监狱中为自己犯下的过错忏悔的故事。
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