Disclaimer: I do not own DC Comics or the CW TV shows Arrow, The Flash, Legends of Tomorrow, Supergirl or any other characters or elements pertaining to the mentioned franchises.

"I'm going to kill him." Clark clenched his fists. "I swear I'm going to kill him!"

"No." Kal said as he, Superman and Supes held Clark by his shoulder. "We understand how you feel and we won't let him get away with it."

"But you need to get ahold of yourself, Clark and not let your emotions get the best of you. Kara sacrificed herself to save the multiverse and if you go after Anti-Monitor blindly and get yourself killed, it'll all have been for nothing." Oliver said and Clark breathed out.

"You're right." Clark said.

"I'll take her body." J'onn said as he picked Kara D.'s corpse, while Oliver and Barry were trying to hold back tears, mourning for one of their closest friends as J'onn flew off.

A glow of light appeared out of nowhere within the chamber as Psycho-Pirate, Alexander and Lex observed Anti-Monitor forming, with his armor in cracks and Thawne entering.

"You look like you have been dragged through dozens of kinds of crap. What happened?" Lex asked.

"Doesn't matter. The foolish Supergirl tried to destroy me and damaged my armor." Anti-Monitor said. "I underestimated the Paragons and their allies but we will defeat them on my turf."

"And I suspect you will uphold your end of the bargain?" Alexander asked.

"We will." Thawne promised.

S.T.A.R. Labs, Earth-1

Allegra watched the news about the red storm covering the entire planet and other Earths converging and people panicking as she was going through Nash's journals, wondering what could help, when something caught her interest as a photo fell off one of the pages and she noticed that on it was Nash and a woman, who bore a strong resemblance to her and she realized that it must have been her doppelganger and that was probably why Nash was so fond of her as she, out of curiosity, went through Nash's journals and her eyes widened.

Elsewhere

"I'm so sorry, Barry." Oliver placed his hand on Barry's shoulder as they both sat down, mourning for Kara D.

"She did what she thought was right. Always did." Barry said sadly.

"That's all we can do." Oliver sighed. "I thought I could stop this and save you both but now I see that… sometimes, you can't change your fate. All you can do is try to make the best even from the worst situations, which she did."

"I'm also going to die… but if that's my fate, I'm not going to go down groveling. I'm gonna get up on my feet and face it." Barry vowed, clenching his fists as they looked up into the skies and saw other Earths stop moving.

"Looks like the convergence has stopped… at least for now." Kal said.

"Thanks to Kara. Our Kara." Barry said, turning to Kara K.

"She was a good person. Let's make sure her sacrifice isn't in vain." Kara K. nodded.

"We need to find the Anti-Monitor. He has retreated but he will be back." Bruce said.

"How exactly are we supposed to track down a cosmic god?" Dick questioned.

"Do you copy? Barry!" Iris reached out.

"Iris?" Barry tapped his comms.

"Barry, if you can get back here, we need you in S.T.A.R. Labs, right now." Iris said.

"Cisco, can you open the breach?" Barry asked, turning to Cisco, who reached out with his hand and opened a breach.

S.T.A.R. Labs, Earth-1

"Nash did what?" Barry demanded as Allegra and Iris filled him in.

"That door under Central City, Nash figured it out. It's not just a lead about the Monitor and the Crisis, it's a backdoor." Iris explained.

"Backdoor to what?" Oliver asked.

"To the antimatter universe. To Anti-Monitor's domain." Pariah explained as he teleported into S.T.A.R. Labs. "I discovered one as well, eons ago, which released him. And Nash Wells also found one and by glimpsing into Anti-Monitor's antimatter universe, Anti-Monitor had a glimpse into your universe as well. And as I have said, he will finish what he had started."

"He has retreated. I think we should take the fight to him, while we still can." Barry said.

"Barry, this is suicide." Iris protested.

"Look, Kara sacrificed herself to stop him and I'm not going to let her death be in vain, every second we waste here, he's recovering his strength, we need to stop him before he finishes wiping out the entire multiverse." Barry said.

"What about you?" Patty pointed out.

"This isn't about me." Barry said as he turned to Patty, determined. "It's about every person alive in every universe."

"Are you sure about this?" Iris asked, not wanting to see Barry die.

"Iris, if we don't do whatever it takes, then everything we've been through, all our losses, sacrifices our friends have made, it will all have been for nothing. This is it, people." Barry said and after a moment of consideration, they all nodded.

"If you're sure about this…" Oliver started.

"How are we going to get there?" Frost asked.

Central City

Oliver, Barry, Kal, Diana, Wonder Woman, Bruce, Cisco, Sara, Harry, Frost and Dick were in the underground tunnels as Barry had in his hands one of Nash's journals.

"Now, if Nash was right…" Barry read as Cisco vibed the door and saw the vision and then tapped the symbols on the door as each of them glowed before the door opened.

As soon as they entered, they were in some kind of a lab as they looked around.

"You think we're in Anti-Monitor's turf?" Oliver asked, recognizing the architecture.

"Guys." Barry pointed to the treadmill on which was a blur, a speedster running and Barry watched in superspeed and his eyes widened upon seeing the man wearing his father's face and also the Flash's costume. "Oh, my God…"

"What?" Oliver, Cisco and Frost asked.

"It's the Flash from Earth-90." Barry explained.

"Who?" Kal demanded.

"A version of me." Barry said.

"How did he get here?" Oliver asked.

"Anti-Monitor seized him."

They turned around and faced the Psycho-Pirate but upon seeing his mask, they all faltered, fear taking them over as Oliver relived him seeing Sara get sucked out, both from Gambit and Amazo, his father commit suicide, Yao Fei's, Shado's, Tommy's, Moira's and Laurel's deaths all of his greatest tragedies, Barry remembered watching Zoom murder his father, Cisco relived mourning for Dante, Kal remembered cradling dead Alicia Baker in his arms or him and Martha staying at Jonathan's side, when he was dying from a heart attack, Wonder Woman relived Steve Trevor's death, Bruce and Dick remembered their parents' and Jason Todd's deaths, Sara remembered being captured by Ivo's men, her brutal training in the League and forced to become cold as she did assassinations, while working for Ra's al Ghul, Cisco relived grieving for Dante, Frost remembered mourning for Ronnie and grief after realizing that her father had been taken over by Icicle.

Barry quickly recovered and rushed at Psycho-Pirate, punching him in the face, knocking him out.

"Using our greatest fears against us? That doesn't work on me anymore." Barry said, remembering what Ramsey had done to him recently.

"Can we shut it down?" Bruce asked, turning to the antimatter emitter and gesturing to Barry-90, who was on a treadmill.

Barry then remembered the vision he had seen, when he projected his mind into the future with the help of Jay Garrick. "I think I know how." He then took a breath and remembered Patty, Iris, Cisco, Caitlin, Joe, Ralph, all the Wellses and his parents.

"We need to reverse the flow of energy at the power source." Harry said.

"How are we going to do that?" Clark asked.

"Reverse the flow at its source." Barry said, turning to the orb of energy floating above the treadmill, remembering the vision he had seen, when Jay Garrick helped him project his mind into the future. "This is it."

Oliver, Sara, Cisco and Caitlin realized what was he talking about.

"No…" Cisco shook his head.

"Barry… there has to be another way." Caitlin begged.

"The Flash vanishes in the Crisis." Oliver realized. "Barry, you need to think about—"

Suddenly, a red bolt of lightning sped in, knocking everyone down as Barry glared at the speedster in yellow suit. "Our race isn't over yet, Flash."

"I'm not going to let you hurt them, ever again." Barry growled as he and Thawne sped at each other, exchanging blows as Barry and Thawne then sped around the orb of antimatter.

"What is going on?" Oliver demanded as the chamber started to shake.

"We need to get out of here!" Kal ordered as they started to run, with Kal, Clark, Kara K. and Superman flying everyone as far from the chamber as possible.

"This is it, Barry, you and me, one last run!" Thawne gloated.

"It ends here, Thawne!" Barry said, grabbing Thawne in chokehold but Thawne shook him off as they kept circling around the orb and neither one of them noticed that they started to disintegrate.

"It will never end! I'll always be with you and like I told you, I always win, Flash!" Thawne vowed.

"You are not winning this time!" Barry vowed as both of them started to disintegrate and decay until they turned into nothingness as the chamber started to crumble and the machine started to overload and then a giant explosion followed.

The heroes kept running before they turned and saw a giant explosion and a wall of energy consumed them all.

Now, I've never watched Black Lightning and I've heard that it's mostly average, so it might not be that bad but I don't really have a desire to watch the show, especially, since Arrowverse went down the drain after Oliver's death and end of Arrow, when no hero within the Justice League helps each other.

Yes, Earth-1 Barry disappeared, just like in comic book Crisis, alongside Thawne, since what majorly pissed me off was the writers killing off Barry from The Flash (1990 series), and it was quality-wise in a lot of aspects much better than Arrowverse Flash and what's infuriating is how they made most of the good DC Comics shows like Birds of Prey, The Flash (1990) or Smallville go down the drain and make them worth nothing to prop up their crappy Arrowverse shows, whose quality had declined long ago.

So, what do you guys think about it?

Please review and let me know if you are enjoying this so far and want for me to continue.