My name is Bart Allen, and I am the fastest man alive. When my parents disappeared after a battle with the forces of Darkseid on my tenth birthday, I took up their quest for peace. When I ran back in time to the year 2017, I discovered that the event known as The Crisis of Four Earths has yet to occur, and that the heroes of Earth-1, Earth-2, Earth-3, and Earth-38 have yet to form the Justice League. I have made it my mission to bring both these heroes and the dimensions together. I am the Future Flash.
Jesse, Wally, Rene, James, Mon-El, and Cisco jumped out of the breach to the middle of Central City on Earth-2, and Cisco powered on his comms.
"Jesse and Wally are in position on Earth-2. Just give us the signal when you're ready, Earth-1 Team." Vibe said into the device.
"Rodger that, Cisco. Team Earth-1 is almost in position." Barry replied.
Bart, Barry, Kara, and Oliver landed atop STAR Labs on Earth-1 and Kara activated her comms.
"Barry, Oliver and I can handle Earth-1, Bart. You need to guide Earth-38." Supergirl instructed the future speedster.
"I need to get something from the Speed Force first. Or rather, someone to guide Earth-3." Bart said.
"You're rescuing Jay? How?" The Flash asked.
"I have my ways, Dad." The Future Flash smirked.
"Good luck, Bart." The Last Daughter of Krypton said.
"Thanks, Mom." The Speedster of Steel replied, uncrossing his arms to reveal the symbol on his chest before running off to grab Jay's helmet before jumping into the Speed Force. Kara was left looking at Barry, confused.
"Did he... But I'm... And you're... And we're... What?" The Kryptonian sputtered.
"Yeah, apparently he's our son. Come to think, he has your eyes, hair colour, nose, and powers." Barry noted.
"I thought you were with Iris, and Kara was with Mon-El?." Oliver spoke up.
"Time travel." Barry explained.
Bart landed in the hallway of a hospital, and saw a door to the room where Jay was. The Elder Flash turned to Bart and raised an eyebrow.
"Who are you?" Jay asked.
"My name is Bart Allen. I'm Barry's son from the future. I came to get you out." The Future Flash explained.
"No. Barry would never forgive me if you took my place." The Crimson Comet replied.
"I'm not taking your place. We're both leaving." The Cerulean Speedster explained.
"But there needs to be a speedster in here." Jay said, confused.
"There will be." Bart said with a deadpan tone. As if right on cue, the Black Flash ran up and hissed at the time traveler. Bart's reply was to punch it in the face, grab it by the neck, swap it with Jay, close the door, and open a portal to Earth-3.
"Impressive." The Elder Flash said.
"Thanks." The Future Flash said before he handed Jay his helmet. The older speedster placed it on his head motioned to the portal.
"Shall we?" Jay asked.
"Yes. Let's go and return Earth-3 to its Golden Age." Bart replied before the two ran though.
Bart and Jay landed on Central City on Earth-3, amidst a crowd.
"It's Jay Garrick!" One civilian yelled.
"He's back!" Another replied. The crowd began to applaud their resident speedster.
"A hero's welcome?" Jay asked, tearing up slightly.
"You deserve one. Jesse came to defend Earth-3 while you were in the Speed Force. She told everyone what you did. Now are you ready to help save four dimensions?" Bart asked.
"Of course." The Elder Flash replied.
"Great. When Harry gives the signal, run like hell." The Future Flash instructed, handing Jay a communicator. The older speedster nodded and prepared himself to run. Bart also nodded before opening a portal to Earth-38 and jumping through.
Bart landed in National City, where J'onn, Bruce, Thea, Curtis, Diggle, Dinah, and Clark were waiting. Bruce, Dinah, and Diggle then jumped through the portal to Earth-3 before it closed to act as Jay's backup when the Earths merged.
"Ready?" The Last Son of Mars asked. Bart nodded and activated his comms.
"Let's do this. Everyone ready?" The Future Flash asked.
"Team Earth-1, standing by." Barry answered.
"Team Earth-2, standing by." Wally added.
"Team Earth-3, standing by." Jay reported.
"Great. Harry, count us down." Bart replied before passing instructions to the genius from Earth-2.
"Rodger that. In 5. 4. 3. 2. 1. Now!" Harry yelled. With that, the five speedsters on four Earths took off, ready to guide the dimensions together.
Harry, HR, Caitlin, Julian, Iris, Joe, Alex, Maggie, Winn, and Felicity sat in the Cortex of Earth-1's STAR Labs, analyzing the vitals and energy output of the speedsters.
"Wally and Jesse's readings are increasing steadily." Harry noted with a bit of pride.
"Jay has Earth-3 under control." Caitlin added.
"Bart has Earth-38 in place already!" Winn yelled with joy.
"Barry needs help! Earth-1 isn't moving!" Julian yelled in shock.
"Oh, no. I accounted for Wally and Jesse being slower now, but not Dad. He's going to need another speedster, or the dimensions will collide wrong and be destroyed." Bart explained, voice panicked. As if right on cue, a streak of white lightning zoomed into STAR Labs, and Savitar stopped in front of the desk. He then picked up an extra communicator and turned it on.
"Barry Allen. It seems you aren't fast enough to bring Earth-1 into place. I will aid you." The God of Speed said before running out of the building.
Barry was running around the roof at top speeds when he saw Savitar accelerate up next to him, radiant white electricity trailing behind him. The Flash offered his right hand to the God of Speed, who accepted the handshake.
"I don't plan on dying today, Barry Allen. Now run, Barry. RUN!" Savitar ordered. The two then continued running around the roof of STAR Labs, under the watchful eye of Kara and Oliver.
The team of engineers, scientists, police officers, and writers held their breath as they watched the monitors for Earth-1, and saw the numbers begin rise.
"Earth-1 is moving into position!" Harry yelled. The group then let out sighs of relief and yells of joy.
"All Earths are moving towards the merge!" Alex noted.
"Collision in 3. 2. 1." Caitlin said before everything went white.
Barry awoke in his bed and looked around. He then felt movement in the bed to his left and looked over to the woman beside him.
"Hey, Barry. I guess this means it worked." Kara said with a smile. Barry smiled back before closing his eyes.
"Yeah. I think it does." The Flash replied.