剧集介绍：
抗战时期，国民党密电专家郑云帆破译日军密电陷入困境，得到中共秘密情报人员耿建勋暗助，获得重大战果。抗战胜利后，郑研制出的“蝴蝶”密码成为国民党打内战的利器，郑为之万分悔恨。解放之初，郑云帆背弃国民党，却不投向新政权，独隐遁世；国民党特务对代号“幻影”的郑展开追杀；公安耿建勋等为破获“蝴蝶”密码亦在追查郑踪迹，并由此与特务杀手展开复杂曲折的交锋。郑藏匿于市井，工人许大江、许苗苗父女所代表的民间真情温暖着郑的心灵；红色政权对郑抛下的幼女的人道关怀，更使郑倍感愧疚。特务杀手黎征农劫持郑幼女，逼郑就范，许苗苗舍命救郑女，郑云帆痛疚震撼；此时公安已辩明郑云帆真相，使之无路可逃。专政力量、政策感召和人间真情铸成的恢恢天网，不仅使郑云帆无所遁形，更使他无所遁其心，他被彻底击溃、征服，举起了双手……
Drama Introduction：
Anti-Japanese War, the KMT secret power experts Zhengyun Fan decipher the Japanese secret power trouble, get the Chinese Communist secret intelligence officers secretly helped Gengjian Xun, achieved a major success. After the war, Zheng developed the "butterfly" Password Kuomintang civil war became a weapon, Zheng whom extreme remorse. Beginning of the liberation, Zheng Yunfan abandoned the KMT, but do not invest in the new regime, alone reclusive world; Kuomintang right code "Mirage" Zheng Expand kill; police cracked Gengjian Xun as the "Butterfly" password also in tracing Zheng trail, and thus with Expand spy killer complex and tortuous battle. Zheng hiding in the marketplace, the workers Xuda Jiang, Xu Miaomiao folk truth represented by his daughter warm Zheng mind; red regime Zheng throwing a girl's humanitarian concern, more so Zheng feel guilty. Cheng Li Zhengnong killer spy girl abducted and forced into submission Cheng, Xu Miaomiao risk your life to save Zheng female, Zhengyun Fan pain remorse shock; this time police have discern Zhengyun Fan truth, so that no escape. Dictatorship forces, policies inspired and true feelings Skynet long arm cast, not only Zhengyun Fan nowhere to hide, nothing more so he lodged his heart, he was completely defeated, conquered, raised his hands ......
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