该片讲述了国情局秘密王牌特工—“弹头”小组的四位成员“战略大师”艾力克斯、“百变玫瑰”比比、“暴风枭雄”布莱克、“冷刀疯子”柯莉儿被犯罪集团陷害，成了国情局通缉的要犯。通过一系列被追杀、深入敌后、拯救人质等反恐行动，经历一次次的磨难之后，最终摆脱困境，找出犯罪集团首脑并将其一网打尽的故事。

西汉初年，石泉官府织造、纳贡匈奴的丝绸惨遭火焚，搅动西域风云再起。绣衣直指姜钰，奉密旨前往西域，查明案情，以缓边郡危机。姜钰心爱之人蚕奴，奔走石泉民间募集丝绸，以解庙堂之忧。独闯西域的姜钰，即将面临大汉国运与儿女私情的两难境地……

In the suburbs of Rome two very different souls intersect. One is the son of a restaurant owner who disappeared with his lover. The other is a young mysterious woman who has arrived from China in search of her missing sister.