Back to the Future x Doom (2016) Time Travel Comedy Action Crossover:
Chapter 1: The Quantum Anomaly
It was an ordinary day in Hill Valley—or at least it should have been. Doc Brown was in the DeLorean, fiddling with a curious new modification to the time circuits. Marty McFly sat beside him, nervously bouncing his knee as he anxiously glanced at the flux capacitor.
"Doc, are you sure this is safe?" Marty asked, his usual easygoing demeanor replaced with hesitation.
"Absolutely! Marty, we've traveled through time in the past, and now, thanks to this new modification, we can harness the power of quantum rifts!" Doc Brown grinned, excitement twinkling in his eyes. "The future of time travel is limitless!"
Suddenly, the DeLorean jolted. Sparks flew from the dashboard, and the time circuits flickered violently.
"What's happening?! Doc?!" Marty shouted.
"Something's... wrong!" Doc gasped. "We're not traveling in time the way we should be—this is something... something different."
With a loud screech, the DeLorean shot through the air, its speed increasing exponentially. Marty clutched his seat as the world outside warped and twisted, crashing through various timelines at breakneck speed.
Finally, everything went dark.
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Chapter 2: The Encounter with the Doom Slayer
When Marty regained consciousness, he was no longer in Hill Valley. Instead, he was in a place that looked like a warzone. The ground was cracked, charred, and the sky was filled with an eerie red glow. The DeLorean had crashed into a rubble-strewn building, and when Marty stepped out, he noticed something that made his heart race: a massive demonic creature was advancing toward them.
"Marty, I think we're in a bit of a situation here," Doc muttered, peering out of the DeLorean door.
Before Marty could respond, a massive figure stepped into view—a towering, armored man, wielding a massive shotgun and an energy sword. The Doom Slayer.
"Whoa, Doc! Who's that?!" Marty asked.
Doc's eyes widened. "That's... that's the Doom Slayer. One of the most legendary figures in the multiverse. He's fought demons across countless worlds!"
The Doom Slayer did not hesitate. He launched himself toward the demonic creature, firing his shotgun with brutal precision. Within seconds, the demon was obliterated, its monstrous body disintegrating into smoke.
The Doom Slayer glanced over his shoulder at Marty and Doc, his face hidden beneath a helmet of gleaming steel.
"You... are not from here," the Doom Slayer spoke, his voice low and rumbling through the air.
"Uh... yeah," Marty stammered, "we kind of got thrown through time and space, and—"
Before Marty could finish, the sound of heavy footsteps echoed in the distance. Another threat appeared, but this one was far worse.
It was Olivia Pierce, the UAC scientist, possessed by the Spider Mastermind.
"You shouldn't be here," Olivia hissed, her voice twisted and alien. She lifted her hands, the air around them shimmering with dangerous energy. "I've been waiting for you."
The Doom Slayer stepped forward, tightening his grip on his weapons.
"Doc!" Marty yelled. "Isn't she the one who started all this madness?"
"That's Olivia Pierce, and yes, she's the scientist who opened the portals to Hell. But now it looks like... she's being controlled by something far worse."
"Far worse?!" Marty shouted. "This can't get any worse!"
Doc's eyes darted around. "It can, Marty. It can."
The Spider Mastermind, an otherworldly, massive brain with glowing eyes, loomed overhead, controlling Olivia with its sinister influence. "Time travel and demons? How quaint. Let's see if I can rewrite history... forever."
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Chapter 3: A Time-Bending Plan
Olivia Pierce, under the influence of the Spider Mastermind, manipulated time itself, opening rifts and shifting the very fabric of reality. The Doom Slayer stepped forward, determined to stop her, but before he could engage, Doc had an idea.
"Marty! The DeLorean! If we use the quantum circuits in reverse, we might be able to follow her through time and stop her before she makes any real changes!"
Marty blinked. "Wait, so you want me to time travel again? With... the Doom Slayer?"
Doc grinned. "Precisely! We'll need his firepower, and you'll need to assist him in understanding how to stop Pierce's interference with history."
The Doom Slayer remained silent, his stoic expression never faltering.
"You lead the way. I'll follow your lead," Doc said, glancing at the Doom Slayer. "Marty, we can't waste any more time."
Marty gave a thumbs-up. "Alright, Doc, I guess... let's save the world—or... well, timelines."
The team raced toward the DeLorean. Marty jumped into the passenger seat, Doc in the back, and the Doom Slayer climbed into the back of the car with his weapons at the ready.
The DeLorean roared to life as they accelerated, following Pierce and the Spider Mastermind's rifts across time. Their mission was clear: stop Olivia from rewriting history.
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Chapter 4: The Battle Across Time
As they traveled through different periods—ancient Rome, the Wild West, the distant future—the team found themselves facing increasingly strange and dangerous situations. In one timeline, they arrived in a prehistoric jungle filled with massive, time-displaced monsters. The Doom Slayer tore through the beasts with ease, while Marty tried not to get crushed by giant reptiles.
In another timeline, they found themselves in a dystopian future, where the Earth had been overrun by demonic forces. Olivia was attempting to collapse humanity's progress, but the Doom Slayer would have none of it. "I don't care if you're from the past, future, or hell itself," he growled, before charging into battle.
The DeLorean zoomed between dimensions, Marty frantically navigating through the shifting timelines. "Doc! I can barely keep up with all these changes!" Marty yelled as buildings and time periods blurred past them.
"We have to keep going! We're getting closer!" Doc shouted from the back.
Finally, they reached a timeline where Olivia Pierce had successfully corrupted the past. If they didn't stop her now, the future would be lost forever.
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Chapter 5: The Final Showdown
In a time-ravaged city, under the ominous control of the Spider Mastermind, Olivia Pierce stood on a glowing platform, raising her arms to manipulate history itself.
"You've lost, Doom Slayer!" she sneered, her voice like nails on a chalkboard. "This time, there is no escape."
The Doom Slayer leaped from the DeLorean, landing with a thundering crash on the platform. His chainsaw roared to life, and he charged.
"Doc, now!" Marty yelled, turning the DeLorean's key. With a blinding flash of light, the time circuits activated, pulling the timeline back to its natural order.
Olivia screeched as the Spider Mastermind's influence was severed. The Doom Slayer finished the fight, ripping through the corrupted scientist with one final blow.
As the battle ended, the timelines stabilized.
Marty sighed in relief. "That was insane... but we did it!"
"Indeed," Doc said, his hair a little more frazzled than usual. "We saved the multiverse... again."
The Doom Slayer, his mission complete, nodded toward the team and turned, ready to return to his never-ending battle.
"Thanks, pal," Marty called after him. "You've got some serious moves."
The Doom Slayer didn't respond. He simply disappeared into the distance.
Doc smiled. "And that, Marty, is why you never mess with time—or demons."
As the DeLorean roared into the sky, Marty couldn't help but chuckle. "Yeah, Doc... time travel, demons, and a guy who fights them? Who would've thought?"
With a final laugh, they sped off into the timestream, ready for whatever came next.
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The End (Or... Is It?)