聚焦了异世界和地球之间的千载难逢的比赛，这场比赛将最终决定地球和人类所有的公民的命运。地球保护者雷电必须聚集其领域最伟大的战士，以从邪恶的尚宗手上保卫地球，从而结束所有战斗。

　　The movie picks up right after Scorpion's Revenge where the heroes are attacked by Shao Kahn, which will force "Raiden and his group of warriors into a deal to compete in a final Mortal Kombat that will determine the fate of the realms." This forces the good guys to travel to Outworld defend Earthrealm while Scorpion journeys to find the Kamidogu (a mystic relic made by the almighty Elder Gods) before it is used to bring back the mysterious One Being, who would destroy the universe.