在5000年前的古埃及，俄摩拉城因其城主曼侬（史蒂文·布兰德 Steven Brand 饰）手握重兵，并且统治非常残暴，使其称霸一方。为了反抗他的统治，领地里的其他部落组成联盟向其发动了多场战争。但是结果都是大败而归。原来，在曼侬身边有一位精通巫术 的神秘人物，她能预知未来，遇见部落联盟的战术安排，由此帮助曼侬百战百胜。在知晓这一情况后，部落联盟决定派出一位刺客先把这个神秘人物除掉。但是当刺客摩挲尤斯（道恩·强森 Dwayne Johnson 饰）深入城内准备暗杀那个神秘人物时，却发现这是一位漂亮的女人（胡凯莉 Kelly Hu 饰），而且是因为受到曼侬的威胁才被逼帮助曼侬。最终，他们的目标从这位神秘人物身上转到了直接刺杀曼侬，一场生死大战就此展开……In an ancient time, predating the pyramids, the evil king Memnon is using the psychic powers of his sorceress Cassandra to fortell his great victories. In a last ditch effort to stop Memnon from taking over the world, the leaders of the remaining free tribes hire the assassin Mathayus to kill the sorceress. But Mathayus ends up getting much more than he bargained for. Now with the help of the trickster Arpid, tribal leader Balthazar and an unexpected ally, it's up to Mathayus to fufill his destiny and become the great Scorpion King.