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.

While the Amazons, Atlanteans, the Green Lanterns and Jonah Hex and his outlaws were fending off Darkseid's army, the heroes engaged the villains.

Barry, Eddie, Wally, Jesse, Jay and Accelerated Man rushed at Thawne, Zoom and Savitar and their time remnants.

"Here we go again!" Barry said.

"Only it's much bigger than the last time!" Wally noted as they exchanged blows with Thawne, Zoom and Savitar.

Oliver dodged as Malcolm fired an arrow, when Tommy blocked the following one with his sword as they nodded at each other and Thea fired an arrow at Malcolm, who rolled away to dodge.

"You're incapable of seeing the picture! You will never win!" Malcolm roared and blocked with his bow, when Tommy attacked with his sword. "I tried to make everything better for you and this is how you repay me?"

"Considering that you tried to kill Laurel and have my blood and of 502 more people on your hands, I'm gonna show you just how grateful I am!" Tommy shouted and Malcolm ducked before Tommy could cut his head off and raised his bow to block, when Oliver swung his bow.

Roy dodged as Jade attacked with her sais and used his batons to block. Jade flipped forward, kicking Roy in the face as he stumbled back but Roy blocked with his metal arm before she could finish him off and pushed her back.

Rene took cover, before Rory shielded him, Hex and his outlaws. Rory then used his rags and wrapped them around Darhk's Ghosts, slamming them to the ground before Rene, Hex and the outlaws opened fire again.

Talia blocked with her sword, when Tatsu engaged her before Talia elbowed Tatsu in the face as she spat out blood. Tatsu feigned left and when Talia raised her sword to block, Tatsu switched direction, attempting to cut Talia's hand off but Talia was too fast as she avoided the blade.

Talia then raised her sword, when batarangs flew towards her direction.

"Hello, Bruce." Talia smirked.

"She's mine." Bruce said as he rushed at her, blocking her sword with his gauntlets.

Kara flew around, shooting down the Parademons with her heat vision beams until a blast of energy knocked her down on the ground. Before one of the Parademons could finish her off, a pulse of energy blasted her away as Kara smiled, while Nia helped her on her feet and Kara smiled.

"Not scared anymore of being different?" Kara smiled.

"No." Nia said.

Kara nodded, proud of her protégé. "Good. This is fight of our lives."

Clark and Zod exchanged blows in the air as a shockwave followed, knocking some of the people down on the ground. Zod grabbed some debris and threw it at Clark but Clark flew right through it, slamming Zod to the ground, hard but Zod punched Clark, sending him flying towards the ruins of Hall of Justice.

Zod flew at Clark but Clark fired heat vision beams, sending Zod flying in the air before Clark flew up and rammed him, sending Zod flying into the upper atmosphere before Clark flew down to help.

Rama Khan raised his staff and lifted boulders into the air, throwing them but Ralph enlarged his hand as the boulders bounced off harmlessly. Rama Khan slammed the butt of his staff into the ground as it opened beneath their feet before Zatanna muttered some incantation and the ground closed again. Before Rama Khan could do something else, Constantine raised his hands as the staff turned into dust.

"No!" Rama Khan snarled but then, Conner flew towards Rama Khan, punching him hard in the face, knocking him out.

Henry and Barbara kept running with the Mother Box, with one of the Doomsdays right behind them.

"Guys! We've got the box but a giant Kryptonian ape is on our tails!" Henry shouted.

Richard Dragon suddenly jumped in, kicking Henry in the face, sending him to the ground as he picked the Box. "I'll take that. Thank you."

Dragon dodged, when Barbara attempted to punch him and blocked her blows with his arm and kicked her in the leg, knocking her down.

Doomsday lifted Henry into the air, about to impale him with bone protrusions, when Donna threw a lasso, ensnaring Doomsday and pulling him towards her as she cut off his head.

"Thanks." Henry said.

Barbara ducked as Dragon threw punches before kicking him in the legs as he knelt down. Dragon grabbed Barbara by her leg as she attempted to kick him and threw her down but then he dodged, when Henry opened fire from his rifle but then an explosive arrow appeared on the ground, knocking Dragon down upon explosion. Before Dragon could get up, Mia rushed at him and finished him off with an arrow right between his eyes.

"Mia!" Henry exclaimed, hugging her tightly.

"Whoa, whoa." Mia panted out. "Can you tell me what's going on? What the… the last thing I remember was dust everywhere and then they said you needed our help and then it was like when we attacked Lex's base, only this time, there's aliens and—"

"Mia. Focus." Henry shook her. "First things first. See this?" He showed her the Mother Box. "Whatever happens, don't let them get it. Understand?"

Mia nodded. "Whatever you say."

They ran off with Parademons chasing them until Mera appeared, creating a tidal wave, washing away the Parademons. "Fyff, give me that Box."

Henry nodded, handing Mera the Mother Box as she created a tidal wave, sailing away.

The Thawnes, Zooms and Savitars kept speeding around, dodging the blasts from Ray, Snart, Mick, Cisco, Gypsy and the Waverider before Thawne faced off with Cisco.

"Cisco." Thawne said warmly. "It warms my heart to see you again. I wanted to apologize for…" He made a gesture with his hand as Cisco almost winced. "But had I not done that, you would never have become extraordinary."

"I don't need powers for that." Cisco said before firing his vibe blasts but Thawne sped away to avoid as Barry kept chasing him until he was knocked down by Savitar.

Barry glared, speeding at high speed towards Savitar, as an explosion followed, knocking Savitar off his armor. Savitar glared, getting up but then he stilled as he heard a gunshot. More gunshots rang out, when Hex shot him down.

Slade and Nyssa kept cutting down more of Ramsey's blood brothers.

"There's no end to them!" Nyssa exclaimed.

"Darkseid will help me save humanity! Don't fight it! Embrace it!" Ramsey shouted as he turned into a giant monster covered in red mass and Slade and Nyssa dodged, when he attempted to punch them. Ramsey lifted Slade in the air but Nyssa cut his hand off as Ramsey screamed in pain before his hand regenerated. "Big mistake."

Ramsey turned his hand into a mace, about to slam them both as Slade and Nyssa covered their eyes but then, a blast of energy followed as Allegra showed up.

"You!" Ramsey glared.

"I'm not gonna let you hurt my friends, ever again! This ends here!" Allegra yelled, charging her hands as Ramsey lunged at her but Allegra did a thunderclap as a blast of energy followed, evaporating Ramsey and his blood brothers into ash.

Before Allegra could recover, her cousin Esperanza appeared, kicking her in the face, knocking her down.

"You chose the wrong side, cousin." Esperanza said.

Allegra got up, exchanging blows with Esperanza before Esperanza held Allegra in chokehold. Allegra blasted Esperanza's leg and knocked her down.

"Sorry, cuz. But this is bigger than you and me." Allegra said before punching Esperanza, knocking her out.

Dinah blocked Scimitar's sword with her staff before she pushed him back but she sensed something coming her way and ducked to avoid as Bear threw his shield at her, cutting down some of her hair. Bear rushed at Dinah but she jumped back and kicked him in the face but Bear grabbed her and slammed her to the ground.

Dinah choked, struggling for breath as he grabbed her by her throat but then, Dick kicked him in the face, staggering him back. Dick dodged as Bear tried to attack with his shield and Dick had the advantage of being slim and faster, while Bear was too slow due to his muscular stature, with Dick hitting Bear in the leg, forcing him on his knees before Jason shot him in the face, killing him.

Cassandra and Stephanie were engaged in a fight with Red and Silencer, with Cassandra dodging Red's darts before she threw a bola, restraining her. Silencer and Stephanie exchanged blows, Silencer kicking Stephanie, staggering her back and Stephanie dodged as Silencer's knife scratched Stephanie's suit. Silencer's knife and Stephanie's batons crossed until Stephanie was knocked down. Before Silencer could finish Stephanie off, Cassandra grabbed her knife, disarmed her and then sent precise punches, breaking Silencer's ribs as she coughed blood and fell down.

Artemis fired arrow after arrow until Cheetah lunged at her. Artemis blocked Cheetah's claws with her bracelets before grabbing her by her tail and throwing her away. Artemis pulled out her sword and dagger as Steppenwolf rushed at her, swinging his axe.

Grail swung her blade, as the energy wave incinerated some of the Atlanteans and human soldiers. As Grail was about to attack again, Donna rushed in and used her lasso to parry Grail's attacks. Donna rolled away as Grail attempted to slice her in half before Diana rushed in, blocking Grail's blade with her shield.

Diana attempted use the Godkiller to decapitate Grail but Grail dodged and jumped away, while Donna engaged her and Diana jumped away to engage Granny Goddess.

Tatsu dodged, when China White attacked with her knives and parried them with her swords. Tatsu feigned left, when White blocked and suddenly, with one swift movement, Tatsu cut White in her side as she fell to her knees before Tatsu cut White's head off as the body toppled, blood seeping from her neck.

Mark Mardon flew into the air and attempted to strike them all down with lightning before, much to his shock, Zatanna absorbed it with her magic and sent it towards his direction, sending him flying away.

Gamemnae summoned lightning from her arms, while Tezumak created a tornado of fire, sending them towards their way but then, Constantine muttered an incantation in Latin, creating a magical barrier as the lightning and fire disappeared. Before Gamemnae and Tezumak could do anything else, Zatanna raised her hands as from the sky was sent down upon Gamemnae and Tezumak a beam of light, evaporating them both.

Darhk threw piles of rubble towards them but Zari blew the rubble away, while Nora Darhk appeared, sending Darhk to the ground with her magic before he recovered, glaring.

"How could you do this to me, Nora doll?" Darhk demanded with betrayal and pain in his tone. "I did this all for you!"

"You've ruined my life! Made me an unwilling vessel for Mallus! You're going to pay for what you did!" Nora glared.

"In that case, consider yourself grounded for life!" Darhk sneered as they attempted to push each other back telekinetically.

But then, Doctor Fate appeared, sending a magic blast at Darhk as he slid down the ground. "Damien Darhk, Fate has decreed that you shall harm no one ever again!"

Nora then grabbed Darhk by his throat as his skin turned blotchy grey and eyes went pale white, as Nora drained his life force from him and then let go of him as Darhk slumped to the ground. "My name may be dark… but I choose to fight for the light."

Bruce used his bracers to block as Talia attacked with her sword and then broke the blade. They both then exchanged blows before Talia held Bruce in neck lock.

"I wish things had been different, Bruce, but fate has decided that we're both on opposite sides." Talia said. "And this is a fight you can't win. Submit to destiny."

"I make my own destiny!" Bruce sneered, freeing himself from Talia's grip and kicked her back.

Talia pulled out a dagger but Bruce dodged as she scratched him across the wrist and knocked him down. Talia was about to finish Bruce off but then, a fragment of the blade of Talia's sword embedded itself in her throat, cutting her carotid artery as she gagged. When Talia turned around, Selina threw another fragment of metal right between Talia's eyes as she swayed.

Bruce got up as Selina kissed him fiercely.

Barry and Thawne exchanged blows in superspeed until Barry threw Thawne, sending him crashing towards some debris as Barry vibrated his hand, pinning Thawne, who laughed maniacally as Barry was about to plunge his hand into Thawne.

"Come on, Barry, even if you would kill me, I'll always find a way to come back." Thawne gloated. "Come on, kill me!"

"We don't need to kill you. We just need to make sure you can't hurt anyone, ever again." Eddie said, nearing Thawne as he touched Thawne's chest and then Thawne screamed in agony.

"Nooooo!" Thawne screamed as he faded away, dissipating in red particles.

"What did you do to him?" Barry asked.

"I sent him somewhere he can't hurt anyone, ever again." Eddie explained and Barry nodded before they went to help the others.

Grail jumped and searched for the Mother Box until she was knocked down by Bekka, who pulled out her sword.

"You've always been ungrateful, sister-in-law." Grail sneered.

"No. I just vow to follow the light, while you hide in the darkness." Bekka said as they engaged each other as their blades crossed. Grail fired her Omega beams but Bekka formed a shield in her hands, blocking the beams. Bekka dodged, when Grail swung her sword, cutting her arm off before Bekka grabbed Grail by her forehead. "May you find peace in the beyond, Grail."

Grail screamed as she glowed red until she was burned into ashes.

Laurel and Sara attacked in sync as Lady Shiva held her own against their combined efforts, dodging and blocking their attacks.

"You've come a long way. But I'm still a superior fighter." Shiva said.

"Then I guess we're gonna have to fight dirty." Laurel said and Sara nodded.

Sara swung her staff but Shiva dodged and Laurel grabbed Shiva, headbutting her and kneeing her in the groin, dazing her but Shiva was relentless, holding her own against them.

Mera attempted to take the Box as far away as possible, sailing on a tidal wave but was knocked down by a telekinetic blast from DeSaad, who pulled it towards his hands and he started to fly towards Darkseid before Rachel flew in and summoned a flock of ravens, knocking DeSaad down as he dropped the Box.

Vandal Savage picked the Box and picked his blaster, shooting down anyone getting in his way as he rushed to Darkseid but then he was knocked down by Kendra and Carter. Savage got up and glared.

"Just like the last time?" Savage said gleefully.

"You are not going to win this time." Kendra sneered as she and Carter attacked him with their maces.

Savage disarmed Kendra of her mace but Carter grabbed Savage by his arm and struck him in the face with his mace, knocking him down. Savage recovered and kicked Carter back before Carter used his wings to block as Savage threw his knives. Carter grabbed Kendra by her arm and swung her as she kicked Savage in the face, knocking him down. Savage got up but Kendra twirled her mace and struck Savage in the chin, sending him crashing towards some rubble, taking him out of the fight temporarily.

"I'll help them, get that Box out of here." Carter ordered.

Kendra nodded, picking the Box and flying away but then a Parademon ripped off one of her wings, sending her crashing down. Before the Parademon could blast Kendra, he was encased in some golden substance and fell down as Lisa helped Kendra on her feet.

"Thanks." Kendra smiled.

"You're welcome. You're Cisco's ex, right?" Lisa asked and Kendra blushed.

"The Box!" Carter shouted, picking the Box and flying with it away but was forced to let it go, when Reign unleashed her sonic scream. Mon-El flew up, punching Reign into stratosphere as the Box was falling down.

Malefic grabbed the Box and was flying with it away before he was knocked down by J'onn as Malefic glared hatefully.

"Don't do this, brother." J'onn pleaded. "If Darkseid gets that Box, we'll all become his slaves."

"I trusted you once and half our people had vanished!" Malefic snarled.

M'gann knocked Malefic down and picked the Box. "If Darkseid wins, there will not be our people anymore. You've chosen the wrong side."

Malefic considered. All he wanted was to make amends for his crimes against Martians but as he looked around, he realized that Darkseid would be no good for the Martians.

Malefic let J'onn and M'gann take away the Box as Kalibak glared at Malefic. "You're betraying us?"

"No." Malefic turned to Kalibak. "I've betrayed my people twice. I'm not going to do it thrice."

Kalibak engaged Malefic but groaned, when Malefic used his psychic powers to daze him before Malefic punched Kalibak hard, staggering him back before they exchanged blows.

J'onn and M'gann were flying away with the Box but were forced to drop it, when Black Manta fired from his beams.

Lex flew around, shooting down the Parademons until he blasted away Harkness and Ocean Master as he landed. The Mother Box then fell towards Lex, who picked it and stared in contemplation as he looked around. Now he had the power of gods in his hands, literally. Lex raised it as it glowed in his hands. Now he had the opportunity to reshape the universe in his image, becoming the hero he had thrived to be.

But as Lex lifted it into the air and attempted to use the energy, suddenly he groaned in pain, the energy burning his arms as the discharge of energy sent him flying back, burning half of his body, knocking him out as the Box rolled down on the ground.

Darkseid rushed towards it, but Kara punched him in the face, sending him crashing towards some debris. Kara flew towards the Box but Darkseid blasted her away with his Omega Beams. Darkseid ran towards the Box and almost reached for it but Oliver fired an arrow as it exploded, sending the Box flying in the air. Bruce used his grapnel and picked the Box, ascending towards nearby ruins but was forced to drop the Box and dodge, when Darkseid fired his Omega Beams.

Diana jumped into the way, using Granny Goddess as a shield as Darkseid's beams evaporated the latter and attempted to reach for the Box. Oliver fired an arrow as it flew into the air, when Clark, Barry and Kara rushed towards it, but Darkseid managed to catch it in his hand, about to crush the Box and use its power.

"You will all fall before me! I am… inevitable!" Darkseid said, clenching his fist, about to use the Mother Box but Bekka cut his hand off with her sword, while Orion blasted Darkseid, staggering him back.

"No, father. You are bested." Orion said as he and Bekka engaged Darkseid, alongside Clark and Diana, exchanging blows but Darkseid froze as in slow motion, he saw Barry rushing towards the Mother Box, with Kara flying towards it and as both of them reached for it and it glowed, Darkseid's eyes widened and his blood ran cold, realizing that he had lost.

Next thing they knew, there was a giant explosion of energy, sending everyone in the near proximity to the ground.

Oliver and Tommy continued fighting Malcolm, crossing their weapons, when Malcolm turned into dust right in front of them.

Cisco, Gypsy and Breacher were about to blast Bane, when he turned into dust.

Artemis blocked Steppenwolf's axe as their weapons crossed until he faded into dust.

Mia was knocked down and covered her eyes, when one of the Doomsdays was about to impale her with his bone protrusions but he faded away into dust, much to her shock.

Everyone stopped as they stared in shock to see their enemy vanish, remembering what had happened two years ago.

Darkseid groaned, a giant hole appearing on his chest from the explosion as he staggered on his feet until he swayed and fell to the ground and everyone stared as the God of Evil himself had been defeated for good as he turned into dust.

"Barry…" Oliver rushed in with Cisco, Caitlin, Eddie, Jax, Stein, Ralph, Allegra, Wally, Harry, J'onn, Mon-El, Clark, Lena, Winn and Nia.

"Barry!" Caitlin cried out.

"Kara!" Clark yelled, as they all looked around.

"Guys…" Cisco whispered as he pointed to the crater, where Darkseid had been earlier, with Bekka cradling Orion in her arms.

"Where are they?" Oliver asked but then they all felt their hearts being crushed, when all that was left of Barry and Kara were the symbols on their suits, with Barry's lightning bolt emblem and the crest of El on Kara's chest plate.

"The energy was too much." Bekka said, with tears in her eyes. "Mr. Allen is a mere mortal and while daughter of El is strong… it is a miracle I could still protect my husband."

Orion groaned, half of his body burned. "I'm truly sorry… we stopped my father… but at the cost of your friends' lives."

Everyone felt completely devastated as Cisco held Caitlin by the back of her head as she sobbed into his shoulder, while Harry held Jesse tightly and Eddie sniffed and Laurel sobbed into Oliver's chest and Sara wasn't any better and Lena felt Clark's arm around her neck as she was breaking down. Everyone stared and mourned sadly for losing Barry and Kara. While they had beaten Darkseid, once and for all, it came at the cost of Barry's and Kara's lives.

Well, considering that Thawne has become a Voldemort in Season 6 of The Flash, it is debatable, whether killing his physical form would stop him permanently, so the next best thing would be to trap him in the Speed Force, which is what Eddie did.

It was hard to write fight scenes, while juggling between so many characters but I hope you enjoyed them.

As for how the Box's power backfired on Lex, well, he didn't face the test the other heroes did, making him unworthy of it.

Back when I was planning to write COIE in my series, I had planned something like this with Barry and Kara but after my disappointment with the crossover, I decided to implement some of my original ideas for my Crisis story into the Darkseid story, since I had planned for Barry and Kara to die like how they died in the actual comic book. But after my decision to scrap my Crisis story, I decided to combine some ideas from it with the Darkseid story.

Originally, I planned for it to be Bruce to be the one to ultimately stop Darkseid, like in Final Crisis arc but then I decided for it to be Barry and Kara after my disappointment with the COIE and as for what happened with Barry and Kara, well, if you know what happened in the comic books later, you can take a guess how I decide to end the story. I was planning something similar with Bruce, like what happened with him in the comic books.

I might write COIE as a standalone but first I'd like to see how the others are going to handle it, since quite frankly, after my disappointment with the actual crossover, it gets hard to bring myself to write a story that would as much as refer or be just a little related to the Crisis.

The next chapter is going to be a concluding epilogue to this story and The Darhk War series.

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.