Disclaimer: I don't own Injustice and Shonen Jump Properties.

Prologue Start:

Earth, a planet that used to be protected by an alliance of champions Justice League, led by the powerful and inspirational hero from planet Krypton, Superman.

But manipulation by a criminal mastermind, the clown prince of crime known as The Joker, led Superman to accidentally kills his wife and unborn child, and destroying Metropolis.

In retribution, Superman murdered The Joker in cold blood.

Seeking to eliminate the evil that led to tragedy, Superman established a powerful regime The One-Earth Force by recruiting heroes and criminals who agree or submit to him, naming himself High Councilor.

Superman's former ally Batman, along with the heroes or former criminal who opposed Superman's dictatorship, form a resistance group The Insurgency against Superman's regime. But his control was absolute, people of Earth are suffered, many of his former allies that stand up against him are death.

But then, The Insurgency group got unexpected help from the Justice League of another dimension, the dimension that Superman is still and forever will be the symbol of justice. Combining their power, Superman and his regimes are defeated. The Earth regains her peace.

But peace was stolen when Earth was attacked by the alien The Collector of the World Brainiac, and his group of crime society.

Desperate times led to desperate measures. Desperate to stop Brainiac, Batman releases Superman from custody and forms an uneasy alliance with the remnants of the Regime.

The uneasy alliance successfully defeated Brainiac and his crime society. But in victory, Superman kills brainiac, defeats Batman and the resistances, and used Brainiac's technology to re-establish his regime. He captures Batman and used Brainiac's technology to turn Batman into a mindless slave

The One-Earth Regimes easily conquer the world, Superman is now becoming crueler and more controlling than ever before.

Without Batman as their leader, the Resistance group reluctantly choose to hide from Superman and his regime. But their struggle and resistance still continue, as they will get help from unexpected heroes from another universe.

Prologue ended:

-0-

Injustice Vs. Jump Force.

Chapter 1: The Arrival.

-0-

Gotham City.

"Hoamm...mm ?" The captain of Straw Hat Pirate, Monkey D. Luffy, wakes up from his slumber. Then he realizes something.

"Wait, this is not Thousand Sunny?" Luffy looked around him. He woke up in the deserted dirty alley. "Ah! Maybe this is Usopp's another prank! I'll get him later!"

"Luffy? Is that you?"

Luffy turns his head to see the person who calls his name. He instantly recognizes the person even though his appearance is changing

"Naruto!? Is that you!?"

"Yo!" The gutsy ninja from Hidden Leaves Village, Uzumaki Naruto, waves his hand. "Long time no see."

Naruto and Luffy fist-bumping at each other. "Yeah, it's been a month since Prometheus."

"For me, it's been two years." Naruto scratches the back of his head.

"That explains the new look," Luffy said. "And now you're taller than me too."

"Hey guys, Long time no see!"

Luffy and Naruto looked at the person who greets them.

"Goku!"

The Saiyan Warrior Son Goku approach them. "Looks like the three leaders of Jump Force squad are together again." Goku looked at Luffy and then at Naruto. "You two seems stronger than when we had our last sparring."

"Heh, you'll be surprised with what I can do, pops!" Naruto smirks.

"I have a new technique too, you better prepare for it." Luffy cracking his hands.

"Hahaha, I really want to spar with you right now," Goku said while laughing, but then his expression turned serious. "But that can wait, so we're summoned again in another world huh?"

"Maybe..." Naruto said as he, Goku, and Luffy walkout from the alley, to saw the view of Skyscraper buildings in front of their eyes.

"Looks like we're back," Luffy said.

"Hmm, wait a minute," Goku said. "Maybe this is just like the world we stranded before, but this is a different world. I can feel several powerful energy from this world. So powerful, it can even easily destroy the universe."

"Powerful? So what you mean this world is filled with some kind of superhuman?" Naruto asked.

"I think so." Goku nodded. "This somehow makes me excited."

"So this is a different world than we were stranded before?" Luffy said.

"Not really different from the world we encounter before right?" Naruto added.

"You're right," Luffy said as he looked around once again. "Hey, I saw many 'S' symbol in several buildings. What does that mean?"

"S for Sucker?" Naruto jokes make Luffy laughs.

Goku suddenly felt a three powerful being approaching them. "Someone's coming."

Goku, Luffy, and Naruto looked at the sky, to saw the Regime's queen Wonder Woman slowly landing from the sky. And her two subordinates, Bane and Killer Croc appeared from the other side of the alley.

Wonder Woman points her sword at the three Jump Force leader. "Intruders from another world, for coming into this world without permission and an act of contempt of High Counselor, your sentence is death! Brace yourself!"

"Wow, what a welcome," Naruto said in sarcasm. "Wait, how they know that we are from another world?"

"For now it doesn't matter, Naruto. They are already preparing to kill us." Goku prepares his stances "This is exciting, can't wait to test the skill of this world's warrior."

"Huh, the type of person like you is what I hate most! I'm going to beat you into a pulp!" Luffy also prepares his fighting stance.

Wonder Woman command her subordinates. "My Suicide Squads, KILL THEM!"

"Brace yourself, they're coming!" Goku said as he, Naruto, and Luffy charged at Wonder Woman, Killer Croc, and Bane.

The first fight for the several wars that will determine the fate of this world will begin.

-0-

Unknown Place.

"Baby Bat, you saw this?"

"Don't call me that Harleen, and yes, I saw it."

"Do you think they're good guys?"

"Funny you said that since you're on the Regime's side back then."

"...I'm still not forgiven, isn't it?"

"Everyone, be quiet. Let's watch them for a while, then after that, we can decide that they are they can become our last hope or not."

"Alrighty then, Baby-batsy!

"TT"

To Be Continued.