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影片根(gen)据真(zhen)实事件改(gai)编。一场当街持枪杀人案掀起轩(xuan)然(ran)大波,刑侦支队长周宇桐和徒(YA)弟王(wang)峰(feng)几经追查锁定职(zhi)业杀手(SN),实施抓捕之(YN)际,雇凶(xiong)杀(ZI)(sha)人的范家两兄弟不惜铤而走(WK)险(xian),设计大(da)爆炸来杀人灭口,王峰在行动中不(XA)幸牺(xi)牲,凶(xiong)残嫌犯却杀(sha)人劫(HJ)(jie)车,试图穿越(yue)林海雪原(yuan)出境。来不及悲痛的周宇桐怒火追凶,身受(shou)重(chong)伤(shang)却坚持(chi)咬紧不放(fang),在零(ling)下30度(du)的极端(YS)严寒中与悍(han)匪(fei)范巨友展(zhan)开(kai)了殊死(si)搏斗……