The Scorpion King story begins as Mathayus (played by Dywane "The Rock" Johnson) is hired by the king to kill a sorcerer and his half-brother Jesup (played by Branscombe Richmond) and their friend Rama (played by Esteban Cueto). The reason why they are hired to kill the sorcerer is because the sorcerer has prophetic powers that allows the extremely vicious Egyptian Emperor Memon (played by Steven Brand) to rule his empire with hate and cruelty.
The Mathayus eventually sneaks his way into Memnon's camp and eventually finds the sorcerer's tent and to his surpise he discovers the sorcerer is a beautiful sorceress named Cassandra hu (played by Kelly Hu). Then he is caught by the guards and Jesup and Rama are murdered.
The Emperor would love to do nothing more than to kill Mathayus, but the sorceress tells the emperor that their gods favour Mathayus and if he chooses to kill him, the emperor will make them angry. Frustrated with this news the emperor decides to then burry him up to his neck in the sand for fire ants eat his head and Mathayus is unable to kill himself. he manages to escape with the help of Arpid.
Soon at Memnon's palace, Cassandra foretells that he will beat and win a battle against the west and the Queen Isis (played by Sherri Howard). Memnon then decides to order his sliders to begin preparing for their final campaign. Cassandra tries to warn Memnon over and over again that his viscous methods will never bring peace. Of chorus Memnon refuses to listen to Cassandras warnings and then tells the story of an prophecy and prophecy says that whoever enters the House of Scorpio will then become the immortal Scorpion King and will be a legend. Memnon's has also decided he wants Cassandra as his bride.
In the end Mathayus and Cassandra become King and Queen of Egypt.