林薇(白百何 饰)是重案组的一名警员。一天，她的女儿无故失踪。在追捕过程中，唯一的嫌疑人杨念(黄立行 饰)却横遭车祸导致失忆。为了找回记忆，杨念决定重返黑帮，但为了找回女儿的林薇也不惜代价对他步步紧追。与此同时，重案组组长陆然(明道 饰)也在对案件展开铺天盖地的追踪。 （英语）Lin Wei (played by Bai Baihe) is a police detective. His daughter has been kidnapped. As she searches for clues, the only suspect Yang Nian (played by Stanley Huang) has lost his memory of the past after a car accident. To get his memory back, Yang Nian decides to rejoin a mafia gang that seems to be connected with his past, but Lin Wei presses hard on him at all costs to get her daughter back. Meanwhile, detective Lu Ran (played by Ming Dow) is also aggressively investigating the case.