上一部中，超级电脑“天网”阻止人类抵抗领袖约翰·康纳诞生的行动失败，时隔13年后，在“审判日”到来之前，“天网”派出了更加先进的生化机器人T-1000（罗伯特·帕特里克 饰）从公元2029年回到洛杉矶追杀已经长大的约翰，与此同时，约翰也派出了机器人T-800（阿诺· 施瓦辛格 饰）回去保护年幼的自己。

　　《赌城风云》(Las Vegas)这部快节奏、刺激的剧集继续讲述拉斯维加斯的精英保安队如何维护这个欲望之都最大赌场的安全。爱德华(Edward Melvin Deline，詹姆斯-凯恩饰演)，是Montecito赌城保安队主管。丹尼(Danny McCoy，乔什-杜哈明饰演)是一名出生于拉斯维加斯的前美国海军，他也加入了精英保安队。他们两一起面对老千，意图偷窃大笔金钱的竞争赌场等。　　丹尼和爱德华唯一的女儿德琳达(Delinda Deline，莫莉-西姆斯饰演)的感情，Montecito赌城更换新老板，赌城一次次被盗。都是故事发展的线索。

　　Ed is framed for murder when enemies from his past resurface. Danny and Mike secretly intervene to investigate and take matters into their own hands. Meanwhile, Sam, Nessa, Mary and Delinda desperately attempt to find tenants for their new joint-purchased home, settling on what they think to be the perfect tenants, only to discover they've misjudged the situation.

　　Picking up from where the last season left off, security realizes that a gun was fired in Ed's suite, as Danny and Ed's daughter realize they have deeper feelings for each other than either of them wanted to admit. Samantha realizes what trouble she's in when one of her high roller clients rolls into the hotel's beach front resort in Hawaii and rolls up a half a million dollar bill and threatens to leave it in her lap, along with the dead stripper in his room.

　　Now the Montecito has been sold to inexperienced young widow-heiress Monica Mancuso, who had it thoroughly renovated, Ed who stayed on as general manager is worried about the top-secret reopening, especially after two recent hold-ups in Indian casinos, but Monica refuses any delay so he can work in new staff. Most old key personnel has left. Danny now heads his late dad's contracting company McCoy Construction, but accepts to return as Ed's right hand, and rehires Mike -who was parking valet- and Sam, whose clients were deserting her, only Ed's daughter refuses. The boys soon find proof the construction crews have been infiltrated as there are at least two officially dead men and computer chips have been planted to cause a blackout one minute after the grand reopening starts, far more sophisticated then in either Indian casino heist.

曾是美国隐形特工绰号“闪光人”的杰克（史蒂文?席格 Steven Seagal 饰）退役后在纽约当了一名普通的刑警，这次他遇到了退役后的最大一个挑战。洛山矶出现了一个神出鬼没、手法残忍的连环杀人狂，当地警察费尽心机都没能找到罪犯的蛛丝马迹，使得当地人心惶惶，于是警局局长想到了杰克。 　　杰克身负重任来到了洛山矶，在这里和他拍档的是经验老到的警探金（基伦?埃弗瑞?韦恩斯 Keenen Ivory Wayans 饰）。两人因作风和手法的不一致而产生了许多矛盾，但为了尽早完成认为，两人都只能忍气吞声迁就对方。杰克和金共同布下了天罗地网，不料却被狡猾的凶手逃脱了。与此同时，新的受害者竟然是杰克的前妻和她丈夫，而现场证据竟然显示杰克就是凶手！

　　一架小飞机失事，机上的人困在一座热带小岛, 岛上有一个废弃的试验基地，然后恐怖的事开始发生。一个人被海边水下一个长长的触手一样的东西缠住了腿，慢慢的人开始变异。当年到底发生了什么导致实验室被废弃？这群人必须尽快找到答案，否则……