Hey guys, this is my first fanfic for the arrowverse and I think it will end up being pretty good. This is also the first time in a while that I've done anything on this website. I hope you guys will enjoy this because I know I will.

Earth 1: Keystone City

Barry Allen was running faster than he ever had, and he was loving it. He was positive that with the help of the tachyon device attached to his chest, he would be able to defeat Zoom once and for all. Everything around The Flash seemed slower to him than it usually did and it felt extraordinary.

Everything was good. Zoom hasn't attacked Central City's hero or anyone for that matter in two whole weeks. Barry was as fast if not faster than Zoom.

Then Barry felt a sort of vibe in the air. He looked around for anything odd and spoke into his com:

"Cisco, something's wrong." Cisco chuckled and looked at Caitlin and Harry.

"Yeah dude, something is wrong. There is no way that you can be going as fast as you are!?" Cisco exclaimed. As usual, there was no reaction out of Harry and Caitlin.

"No man, I can feel something, something weird." Barry replied with a shake of his head even though he knew nobody could see it. Sometimes Cisco's humor wasn't good enough.

"Fine, I'll check the satellites for anything weird." Cisco said reluctantly. Barry heard the typing of Cisco's keyboard through his com and kept running. "Woah, there's a huge interdimensional power source like two miles in front of you. And it's growing!"

Barry kept running to check it out when he heard a slight humming over the noise of his trailing lightning. All of a sudden, a blue portal started opening in front of him. He tried to skid to a stop or turn around but he was too late. He was too fast. Central City's Scarlet Speedster braced himself for anything as his momentum carried him through the portal. He was sucked to anytime, anywhere.

Earth 38: National City

Barry came out of the portal and looked around observantly, trying to find out when and where he was. Everything looked modern and bright. Actually very similar to Central City. Except more skyscrapers. From the looks of it, the time was around , it was time to go, the civilians were starting to stare at the strange man in a red suit.

"Cisco, Caitlin, Anyone?" Barry asked frustratingly into the com on the side of his head. He knew it probably wouldn't work but he tried it anyway. He started to run around, winding through the streets until he saw a newspaper stand. He sped over and saw that the man operating it was old, with clothes similar to ones that people in Central City would wear.

"Hey, can I borrow one of these?" Barry asked with a smile under his mask. The man stuttered with confusion and shock plastered on his face. "Thanks." he snatched a newspaper and scanned it quickly. According to it, the date was March 28, 2016. The same day when he went through the portal. They were also in... National City? That was odd, there was no National City. And he hadn't time traveled, so maybe he...

"Thanks, do you know where Central... Never mind." Barry just sped off, running to somewhere he could think and hold up until he could find a way back. A way back to his Earth.

Earth 38: DEO Headquarters

Kara Danvers was having a pretty good day considering the only problem she has had so far is her breakfast of pot stickers being a little cold. she was currently at the DEO, talking with her adoptive sister Alex about her latest alien encounters when Agent Vasquez ran up to them.

"Um... You might want to hear this. We just got a huge surge of electrical energy near Catco and it may or may not be moving in our direction." Vasquez sounded distressed. "You should go, Supergirl."

Kara nodded and ran off to go and intercept this strange surge of energy. She wasn't scared, but she was cautious. She hadn't known anything like this to ever happen in National City and it was even stranger that the energy source was moving.

"Alex, where is it now?" Supergirl asked. She scanned the barren area and didn't see anything.

"It's nearing your position Supergirl. Be careful, it's moving really fast." Alex replied.

"Got it."

Supergirl suddenly noticed a small streak of lightning coming toward her really, really fast. She stopped flying and hovered 30 feet above the ground as the streak slowed to a stop a couple yards in front of her. Kara focused in on the motionless figure and saw it was actually a humanoid being in a red suit. She glared, thinking the man-like creature was a threat, and sent a beam of heat-ray vision toward him. He easily dodge it and slid to his right.

"Hey, um... whoever you are up there, is there any chance you can stop trying to kill me and actually help me, I don't want to hurt anyone." He yelled. Supergirl grinned. A smart-ass. She wasn't going to back down from the threat. She did it again but this time the beams hit their mark. He flew backwards but landed on his feet as Supergirl landed on hers.

"Guess not. We're going to have to do this the hard way." the man muttered under his breath.

"You know, I can hear you." Supergirl said matter of factually. The man sped towards her and punched her repeatedly, only annoying her. She went to swat him away when he sped back to retreat.

"Well that was easy." she said into her com.

"Wait.. Supergirl don't let your guard down." J'onn said. "It looks like he's coming back towards you."

Supergirl stood her ground and held a stance as she saw the streak of lightning come back at an extraordinary speed and punch her in her jaw right as she heard a sonic boom. She flew back into the air and hovered there, recovering.

"Wow, he was just clocked at 827 miles per hour and created a sonic boom. He knew. He must've learned that any material, any substance if hit at a high enough velocity at just the right angle can be compromised." Alex said through the com to Kara, J'onn, and herself.

"Not helping Alex!" Supergirl said through gritted teeth. She thought she could wait a while to recover out of the man's reach. The man smiled and starting running in a large circle. Curious and confused, Supergirl watched, wondering what he was trying to do. After a couple of seconds, the man stopped and made a throwing motion. Supergirl watched as lightning hit her back onto the ground.

"Huh, he used the energy that built up from his running to hurl lightning. Like the Greek god Zeus." Alex stated again.

"Anything helpful?" Supergirl asked. Alex rolled her eyes.

"This guy might be alien, but he relies on his speed and his lightning. Go hand to hand and your brute strength may overpower his quickness." Alex stated.

"Look, I don't want to hurt you, I just want to get some help with getting back to my world." the man said. Supergirl grimaced.

"You're gonna have too." she replied. The man sighed and started vibrating his whole body. There were now dozens of him, spread out in the barren field. Kara, confused, shot beams at every one of the, each one fading away until there was only one left.

Supergirl flew quickly over to the man/alien. She started punching and kicking with all the force she could muster. he was still too quick. After a couple minutes of hand-to-hand, the man started vibrating his hand at a high speed and punched the Girl of Steel. She flew back for the third time and skidded to a stop after tumbling for a bit.

"Alex! I could use your scientist side for this!" Kara yelled

"Okay, okay! Uh, uh... oh. He uses speed. to disable an amount of his kinetic energy, you could use your freeze breath to incapacitate him."

"Worth a shot."

Kara flew into the air and hovered, attempting to bait the man into trying the lightning trick again. He took it and starting running in circles. Kara blew as hard as she could and the air got chillier and the lightning stopped, leaving only a man in a red suit stuck in a block of ice.

"Thanks Alex, you can get a squad out here to take him into a cell before he melts." Kara said with a sigh.

Earth 38: Prison Cell in DEO

Barry woke up dazed, and not to mention cold. He started vibrating to warm himself up when he noticed his surroundings. A man with dark skin and pointy ears was standing next to the woman he just fought and a red haired woman.

"Um... hi. Any chance your going to let me out of this, thing. You know, there's not much room here." Barry asked with his smile. His mask was still on so they either must've forgotten or just not cared. Nobody else reacted. The three people standing in front of him were accompanied by multiple guards surrounding the room. Everyone dressed in black except for the blonde woman.

"No, why did you give off such a powerful electric surge near Catco?" the man asked. Barry sighed.

"Look, I don't want any trouble. I gave off that surge because I, you know..." Barry made a motion with his hand like he was coming through a door.

"No, I really don't know. Please enlighten us." the man said without much emotion of any kind.

"I came here, I'm not from here." Barry motioned with his hand and waved in a broad motion. "Oh yeah, what are your names? It's getting annoying talking to people without knowing what to call them."

"We'll tell you ours if you tell us yours." the red head said. Barry slipped off his mask and shook his hair.

"Barry Allen."

"I'm Alex Danvers, this is Supergirl, and he is..." Alex stopped, seeming indecisive on what to call the man.

"J'onn J'onzz." the man said. Alex shook her head as if him saying his name was a bad idea.

"Yeah, I have a hard time believing your actual name is Supergirl. Maybe your superhero name? Mine's The Flash." Barry said. Supergirl shook her head.

"And I have a hard time believing your actually a hero considering you were coming straight for our base. Probably to break out one of our prisoners or wreck the place. I won't tell you my name because it could endanger my friends and family if word got out to my enemies." Supergirl replied.

"Look, I wasn't going to your base. I was just running to a place to be alone and think. I'm telling you, I'm not your enemy, unless your bad guys. But I don't think you are. I need to get back to where I came from."

"Yeah, we aren't letting you out of that cell. But, question, how did you learn to do all those things? The lightning, the super punch, the sonic boom." Alex asked.

"Where I come from, i had many smart people help me learn how to use my powers."

"You keep saying where you come from. What does that exactly mean. Are you from another planet?" J'onn asked.

"Sort of, I come from another Earth. It occupies the same space as this Earth and every other Earth but each one vibrates at a different frequency, so they can't see each other. Each Earth is slightly different from the others." Barry took a deep breath and sat down on his small cot. "Can you just let me go, cause if you don't, I can just get out of here myself and find a way back to my Earth. Supergirl laughed.

"And how are you going to do that?"

"You really don't know what speedsters can do, do you?"

"Not particularly our expertise, we specialize in aliens and extraterrestrial beings. But we are fairly confident that you won't be able to escape." J'onn said. Barry shrugged.

"Say what you want. I'll wait until you figure out I'm not someone you want to fight." Barry said. A woman then came running into the room.

"Sir, we have another problem." she said.

"Go ahead, Vasquez."

"A man calling himself Sand Creature is attacking National City, calling for Supergirl." Supergirl ran off, preparing to face the so-called Sand Creature and put him down.

"Wait, Sand Creature? Wait, he's probably made of sand. You won't be able to beat him! He'll slip right through your fingers!" Barry yelled. He had fought Sand Demon before and knew if this guy was anything like him, he would be hard to beat.

"You're not getting out of that cell. Supergirl can handle this." Alex said as she and everyone else in the room started walking out.

"Let me out! Let me help you!" He shouted. But it was too late. They were out of the room and the only way he could see what was happening was the TV set up on a wall. He sighed and slumped against the wall, waiting for the outcome of the fight.