城中發生女子肢解案,行兇手法殘忍,兩位總督察郭柏飛和姜曦文在調查期間接連收到手機助理Julie傳來的神秘訊息協助破案。警方高層關振羽決定成立專案小組ASIB展開調查。
「人體無故自燃」、「廢屋乾屍」、「兒童院幼童憑空失蹤」,離奇案件一宗接一宗,除了柏飛和曦文,招俊朗、溫嘉莉等組員也陸續收到「奪命提示」。經過調查,發現這些神秘莫測的訊息無法以科學解釋,究竟是超自然力量?是來自未來的訊息?還是來自魔鬼的「奪命提示」?
Aliases
郭柏飞、姜曦文和刘力十多年前初出学堂之时,与警长罗友邦四师徒感情深厚。三年前一次行动中,邦被匪徒枪杀、力重伤昏迷,文归咎于飞,好友自此分道扬镳。城中发生妙龄女郎肢解谋杀案,受害者与贩卖人口集团有关,隶属情报科的文负责调查集团罪证,而重案组的飞负责追查凶手,派遣见习督察温嘉莉混入犯罪集团。飞和文不约而同、接二连三地收到神秘手机讯息,提示命案线索,上级遂将两组人合并,成立神秘讯息情报科(ASIB)。ASIB由飞和文带领,共同拆解这些似是来自未来的神秘讯息,侦破离奇命案。
After joining the police force, Kwok Pak-fei (Joel Chan), Keung Hey-man (Moon Lau) and Lau Lik (Jazz Lam) look up to their mentor Law Yau-bong. The quartet have developed a close relationship. Rewind three years, and Yau-bong is killed in the line of duty in a manhunt. And Lau Lik is seriously hurt. Hey-man blames Pak-fei for the tragedy as he is eager for quick success. Their friendship is broken. A serial murder case again brings Pak-fei and Hey-man together. Undercover officer Wan Ka-lei (Tiffany Lau) is instructed to infiltrate a crime syndicate. However, she runs into her ex-boyfriend Chiu Chun-long (Owen Cheung), and they get entangled.