Earthrealm's champions, having just emerged victorious from the last tournament, are immediately thrust into another battle as Shao Kahn, the evil emperor of Outworld, defies the sacred rules and invades Earth. Armed with ancient power and supported by a legion of Outworld fighters, Shao Kahn shatters the boundaries between realms. Earthrealm's leader, Raiden, must guide the warriors Liu Kang, Kitana, Sonya Blade, and newcomer Jax through a perilous journey to stop the merging of Earth with Outworld and restore peace. As the heroes embark on their quest, they encounter iconic adversaries and navigate treacherous landscapes, each step drawing them closer to their ultimate goal.

They form alliances, uncover secret histories, and each confrontation brings them closer to unraveling the intricacy of the impending doom. On their journey, personal tests of strength, loyalty, and bravery propel them further into the heart of the conflict. The fate of humanity hinges on the courage and resilience of these fighters as they race against time to halt Shao Kahn's apocalyptic plan. The escalating tensions and relentless battles pave the way for a climactic showdown, with the future of Earthrealm hanging by a thread.