In this sequel to 1995's Mortal Kombat, portals between Outworld and Earth are illegally opened by Outworld’s emperor Shao Kahn, who has decided the rules of “Mortal Kombat” need not apply to him. This leaves the world’s mightiest fighters only six days to vanquish this new threat and close the portals or lose Earthrealm to the powers of evil.  They return to Outworld to fight for humanity’s fate.