Set during Vietnam the war entangles three souls from around the world. When Hanzo Hasashi, codenamed Scorpion, leads his team against an American platoon only two of them survive. Before he can execute them his camp is raided by a renegade group of soldiers known as the Lin Kuei. Hanzo's team is wiped out and the Americans are taken hostage never to be seen again. When the war ends Hanzo's hatred is fueled by the Lin Kuei and he joins another secret organization known as the Shirai Ryu. It seems that these two clans are rivals seeking control over Asia and Hanzo becomes one of their most talented assassins. To prove himself worthy Scorpion and his ninjas search for a group of Lin Kuei training in the mountains of Tibet. What he discovers is that the two Americans he failed to kill years ago, who are in fact brothers, have been training for a long time and mastered many unique abilities and have become the fifth and sixth generations of the warrior Sub-Zero, an legend to the Lin Kuei...