Petty Officer Michael Davis (Jeremy Davis) is the newbie to SEAL Team VI, but after his first mission the young soldier is weathered beyond hid years. His first assignment as for the elite black ops squad is as Communications Officer for the micro ground assault team that enabled surgical aerial assaults of strategic targets in Iraq, priming allied forces for the what is now known as Operation Desert Storm. The honor of being part of the special forces unit is enriched by the fact that he is invited into the unit lead by the best, Master Chief Devon Mackefy (Ken Gamble).
　　The team, having just returned from one mission, is called into duty once again, because “Mac is the best”. Feeling the pull of the call, and given no option by the powers that be, our heroes go into the thick of it with the usual disadvantages - tired, short by one man and in need of gearing up in the weapons department; all with their invisibility being paramount.
　　The team is rounded out by Petty Officer Williams (Kristoffer Garrison), Petty Officer Sanchez (Neta De Paula) and Chief Petty Officer Roberts (Zach McGowan). The team’s only contact ii Iraqi is Jamal (Amol Shah), a Kurd who has lost his family to the war and now helps the U.S. in these isolated covert operations. Their sole mission: mark aerial targets, avoid capture and stay alive for four days. But the enemy is in every direction. Tensions are high since Davis is untested in the field and Mac is distracted by a recent personal loss. All these complications threaten the success of the mission, as well as the team’s survival.

　　几个月来，粉丝们都对新一季的NCIS无比期待，在上一季的两小时最终回里，NCIS小组失去了一个重要成员，Jenny Shepard主任(Lauren Holly饰演)在一场混战中死于乱枪之下。而Tony (Michael Weatherly饰演), Ziva (Cote de Pablo饰演), Tim (Sean Murray饰演)全部被扫地出门，摆着光杆司令Gibbs面前的，似乎是一个全新的团队。不过根据之前的报道，NCIS的监制Shane Brennan已经暗示粉丝们不必失望，因为在新的一季中，这部剧不会和House一样经历人员大换血；这番话大概能够使粉丝们强大的怨念略有平息。不过他同时也说，新的一季将扣人心弦，悬念迭出，而且充满真刀真枪的较量。

上世纪三十年代，世界局势动荡不安。日本入侵朝鲜，使得大批流亡者涌入与朝鲜接壤的中国满洲，这片荒芜的平原很快成为不法之徒的栖息场所和暴力乐园。貌不惊人的小土匪尹道九（Song Kang ho 宋康昊 饰）只身打劫甘道线火车上的几名日本军官和银行家金丸。同一时刻，冷血匪首朴昌二（Lee Byung Hun 李秉宪 饰）亦率部众劫停火车，其间更与赏金枪手朴道元（Jung Woo-sung 郑宇成 饰）发生火拼。混乱中道九卷走日本人财物跳车逃跑，各方势力却对他穷追不舍。不久道九醒悟，原来土匪和军人的目标不在他手中的财物，而是一张大清国在满洲里的藏宝图……