在太平洋范围内，一批探测员乘坐轮船打算去海洋深处探测，正在他们进行任务对接时，船上人员监测到深海附近有不明障碍物靠近，他们紧急联系入海人员，但最终发生了惨剧，海底监测人员被鲨鱼所食。六个月后，在墨西哥靠近太平洋的海岸港口附近，鲨鱼又出现了，人们并不知情。一个爱好潜水的年轻人在海水中发现了一枚鲨鱼的牙齿。这枚牙齿引起了年轻人的兴趣，他开始寻找相关的资料。而鲨鱼真的会再次出现在墨西哥的港口吗？人们的生命将会受到威胁吗？
江州市发生命案，死者郑大年被发现于江边。警方吴迪、杜鹏等介入调查，其间小保姆阿珍偷钱、收废品人赵守库死亡等情节不断。杜鹏发现诸多疑点指向医生苏玫艳及其男友高雄，最终警方查明真相，嫌疑人也被抓捕，受到了法律的制裁。
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.
