Mortal Kombat is a fighting tournament between the representatives of the realms of Earth and Outworld conceived by the Elder Gods (Mortal Kombat) amid looming invasion of the Earth by Outworld. If the realm of Outworld wins Mortal Kombat ten consecutive times, its Emperor Shao Kahn will be able to invade and conquer the Earthrealm.
The evil Outworld emperor Shao Kahn opens a portal to Earthrealm (Earth) and has resurrected his queen Sindel, Princess Kitana's long-deceased mother. Earthrealm is therefore in danger of being absorbed into Outworld within six days, a fate which reigning Mortal Kombat champion Liu Kang and the other Earthrealm heroes must fight to prevent. When Kahn kills Johnny Cage during a confrontation with the thunder god and Earthrealm protector Raiden (Mortal Kombat), he and the remaining Earthrealm warriors must regroup and find a way to defeat Shao Kahn.