At the fortress, Shao Kahn hits Jade. She says it's not her fault, and she did everything he ordered. He tells her it was her job to lure them into an ambush, if they escaped, she failed him! Jade says they never could have stopped them alone, and Sindel says to listen to her, as she speaks the truth. They would have died trying. Kahn tells Sindel that she's already dead, and then grabs Jade by the throat, telling her she will be dead soon.

He holds her in front of a picture of a demon, which comes to life and eats her before disappearing.

Kahn orders his generals to mount a defense around his newest temple, and be prepared for Rayden to make one last attack. Sindel tells him he'd said Rayden was no longer to be feared. Kahn yells that he is to be feared, for as if she fails him now, he'll feed her rotting corpse to the worms! As he storms off, Motaro tells Sindel that her hallowed position atop the worm pile appears to be most tenuous. Her failure will be his opportunity! Sindel slaps him.

Rayden says that years ago, his father decreed that his heir to the family throne must be strong enough to kill his own brother in battle if necessary. He beat his brother, but could not kill him. Only one thing is certain: Kahn must die. Liu asks him if he's going to kill Kahn this time, but Rayden says he could not then, and he cannot now. Liu asks what they can do, and Rayden says they'll do their best, as it's all that can be expected. He says he'll pray for them all, and then heads off.

Kitana tells them all that Liu is their only hope. Liu says he wants to fight Kahn, but he doesn't know if he's ready. Kitana tells him that he must believe in himself, as they believe in him. They go out after Rayden.

As the realms continue to merge, Liu sees that his home, the temple of the Order of Light, has now appeared in Outworld. Sonya says there's so little time left, and Kitana says they must use the time left well. Jax asks if they're really ready to die here, and Liu says if they die, they'll die in battle together. They arrive at Kahn's temple, where Ermac, Sindel and Motaro are waiting.

Kahn laughs, and says to prepare for final battle! But Rayden then appears, and calls out to Kahn. Shinnok tells his son it's so good of him to join them. In less than one hour, the merger of realms will be complete.

Rayden tells Shinnok that he alone has the power to end this. But Shinnok tells him to stop, as he doesn't want to remember him this weak. Rayden shouts that it's not weak to value life, but Shinnok says he offers him one final chance to return to his side, to rule all realms with his family. Rayden looks at Liu and the others, and says they are his family. Shinnok tells him he shall die with the rest of his pathetic human race. He tells Kahn to finish him. Kahn removes his helmet, and tells his brother that he should have killed him when he had the chance. Rayden says his brother died a long time a go, or his heart did.

Kahn throws out a projectile which hits Rayden, sending him flying off the temple. As the others crowd around him, Kahn tells his brother that he wins. Liu tells Rayden he can't die, but Rayden says he is proud to do so as a mortal, like him.

Rayden then dies, as Shao Kahn says this is the beginning of the end. He tells his generals to show them the way to oblivion! As Motaro jumps down, Jax goes to confront him.

Motaro slaps Jax with his tail, sending him flying several feet. Meanwhile, Sonya starts fighting with Ermac, whilst Kitana fights with Sindel.

Liu moves up the temple, and gets to Kahn. He tells him that it just leaves the two of them, and they start fighting.

Motaro hits Jax with a kick, but Jax uses his ground pound technique to make Motaro stumble. Jax rushes over and starts punching him, but Motaro quickly starts fighting back.

Kahn throws Liu to the ground. He calls his opponent pathetic and weak -clearly Rayden molded him in his image. Liu gets back up and resumes fighting.

But Kahn throws him to the floor again, and then starts kicking him. Meanwhile, Motaro manages to grab one of Jax's arms, and pulls off the cybernetic attachment.

He tells Jax that without his weapons, he's no match for him. As he batters Jax around, Sonya is fairing better against Ermac. She kicks him down, but as he gets up, he releases a soul from himself.

He creates another warrior, and the two of them team up against Sonya. Meanwhile, Jax removes his other cybernetic arm, and tosses it aside. At the other fight, Sindel has managed to knock Kitana down.

Motaro stands up on his hind legs, but Jax punches him and says he has everything he needs right here. Sindel does a heel drop, but Kitana blocks it and then kicks her mother back. Motaro does some tail whips, but Jax jumps over them.

Kitana hits Sindel several times, eventually knocking her down. Jax does the same thing to Motaro, hitting him repeatedly in the face. He then hears Sonya calling for help, so as Motaro collapses, he runs over to where she is.

He takes down the black ninja, whilst she kicks Ermac in the head. She then does a hand stand grab and slams him to the floor, finishing him off by breaking his neck.

Sonya sees that Jax finally got his confidence back, and Jax says she finally asked for help. Nearby, Kitana tells Sindel that whatever she is, she will live to see the end of Kahn, to give her mother's soul peace. Up on the temple, Liu and Kahn are still fighting.

Kahn slams Liu to the ground, and tells him to face it: he will fail! Liu says he can feel it, and undergoes an incredible transformation: he turns into a dragon!

As Kahn looks at Liu's new animality form, he says it's impressive. He's come prepared, but it's not good enough. Kahn then uses his own animality, transforming into a multi-headed serpent.

The two beasts begin to battle, biting and clawing at each other. Liu falls, but he manages to drag Kahn with him, and they both fall from the temple.

They land and change back to their usual selves. Liu sees that Kahn has been injured, and tells him that his blood flows, just like the blood of a mortal. Kahn asks his father how this can be. Shinnok says he warned him there would be consequences for breaking the sacred rules. Kahn says he did not expect this.

Shinnok asks if he must do everything for him, and prepares to fight Liu himself. But then two of the elder gods appear, and change to their human forms. They stop Shinnok, and make him kneel. They say that the fate of the universe will be decided as it should be: in Mortal Kombat!

Shao Kahn leaps towards Liu, but Liu throws him. Liu tries kicking Kahn, but Kahn grabs his leg and slams him. Liu gets up and grabs Kahn by the throat.

Kahn manages to get him into a hold, but Liu does a flip to get out of it. He then kicks Kahn in the head.

He then uses his legs to grab Kahn's head, and slam him to the ground. As Kahn gets up, Liu hits him several more times, and knocks him down with a drop kick. Kahn manages to stand back up again, only for Liu to finish him off with a somersault kick.

As Kahn collapses, Shinnok is imprisoned in a cubic cell, which folds up and vanishes with him still inside it. The tattoo on Kahn comes to life, and Kahn's body melts away. The dragon which appeared from the tattoo disappears. Everyone then notices something is happening to the realm itself...

...as the merger ends, and everything returns to normal. Liu suddenly finds himself back at the temple of the Order of Light. Sindel is also there, and has also been returned to normal.

Sonya and Jax realize it's over, whilst Kitana is finally reunited with her real mother. Jax says that was the longest week of his life, but Sonya thinks it could have been worse -it could have been the last week of their lives. They then notice something up ahead.

Two of the elder gods bring Rayden back to life. One of them says that it's only right that Shinnok's son be allowed to take his place in the eternal palace, as he's become one of them. Kitana goes to Liu, and says she'll never forget this moment. They kiss.

Rayden says they've all made him very proud. He will be watching, so he tells them to stay out of trouble. He wants them to be there for one another, as they're a family now. He puts his hands together...

...and then disappears. Liu and the others then walk off.