一次意外使得干探于子朗(郭晋安 饰)具有了通灵的能力,能感应死去的冤魂传递给他的点点滴滴的信息。子朗本来就精明能干,这下更是如虎添翼,屡破奇案。才华出众的他却受到了上司的嫉妒,于是接口特别凶案调查组的上司准备退休,到那里很快就能升职将他调到了那个警局神憎鬼厌的部门,D.I.E.。与此同时,Madam 刑(郭羡妮 饰)因为过于想表现自己而屡屡闯祸,结果遭到多方投诉而被上司打发到了D.I.E.。Madam 刑和子朗来到这里都发现这里的人十分奇尼古怪,由于两人都一心想着接替即将提休的上司的位置,于是两人结成了冤家,展开了一番明争暗斗。幸好随后两人握手言和,子朗更是暗恋上了Madam 刑,两人一起携手为那些沉冤代雪的冤案伸张正义。In the police force, "Death Investigation Extension" or "D.I.E." was established to accommodate those who have been sent away by their supervisors. As everybody knows, members of the Extension are to investigate unsolved cold cases.